The Truth About Lie Detectors

[@gerwaldlindhelm1230]

I was falsely accused once, so I asked for a polygraph. My lawyer adviced against it. She said that if I failed, they would use it against me. If I passed, they would not admit it as evidence because it has a 20% error rate on average. So taking a polygraph is a lose lose situation. I got my name cleared at the end, but it took a long time to fight the burocracy

[@PhilipMarcYT]

I honestly would never risk using a dumb polygraph test. That's like Russian Roulette.

[@ShinDMitsuki]

The error rate of a polygraph is way worse than 20%, it's random

[@PrajjalakChattopadhyay]

I don't know about the western world, but here in India there is another test called the "narco test". They use a controlled amount of safe narcotic drugs to make the person kind of half-senseless. Then the questions are asked. Since the human brain can't think deep enough in that condition, fabricated lies are not so probable. It's like reading the subconscious mind, where the truth is present. This exercise is quite risky, and is done in the presence of a doctor. And as far as I know, the investigators need the court's permission to do the test.

[@salepien]

@@ShinDMitsuki It’s not random per se it just detects a whole lot more than lies. i.e. Lies=>higher stress levels detectable by a polygraph (don’t necessarily get detected though) Higher stress levels detected by a polygraph ≠> Lies A polygraph as a lie detector is useless. But investigating possible reasons for anomalies in a polygraph may help in an otherwise stalling investigation (By identifying interesting subjects for profiling). Lying is by far not the only thing that can stress you and unusually low stress levels may also be interesting

[@connoisseurofcookies2047]

​@@ShinDMitsuki The polygraph is always right but the person interpreting the results is often wrong. Intuition isn't admissible as evidence so neither should the polygraph be admitted. The issue isn't error rates per se but the fact a polygraph results almost always favour the negative interpretation of a subjects intent as opposed to psych examination, which is more likely to benefit the accused.

[@sturdybutter]

Even though the courts where I live have ruled polygraphs as insubstantial evidence, the police and sheriffs office still use them as an intimidation factor.

[@rettbull9100]

They use them for when you have to get a clearance for the government.

[@gotmilkbutt]

​@@rettbull9100 yet they still are as leaky as a sieve lol. Proof the lie detectors don't work I guess.

[@Secret_Takodachi]

Law enforcement is the "legal gang" employed by the government hence their gang tactics. D2A

[@Artyomthewalrus]

That being said, they are somewhat effective. Not hard evidence of course. And they can encourage people to actually answer truthfully it they believe the police can tell if they are lying.

[@Sneezus420]

@@rettbull9100 Yes, but it similarly used as an intimidation factor / interrogation tool. When a clearance investigator sees a reaction, they'll push farther on that line of questioning to see if you'll crack. Additionally, even if you're the most honest person in existence, if you become a nervous wreck during a polygraph clearance officers can deny you on the basis that you're overly emotional / easily manipulated under questioning (not something the US gov would want in a person who's captured by enemy nations).

[@bobowon5450]

i'll never forget when they hooked a lie detector up to a plant and when it got a reading they came to the conclusion that plants have emotions rather than the conclusion that maybe its not a reliable test of someone telling a lie

[@I.____.....__...__]

The real question is, was the plant guilty, did it do it? 🤔

[@Zach476]

the man that did that study came to the conclusion that the plant had the ability read his mind

[@main-browsing5521]

@Eleanor Bartle i remember it was an episode from mythbusters

[@Azarilh]

OMG- just checked and that actually happen! wtf 😂

[@TheYoutubeUser69]

That's American as fuck😂

[@morpho9989]

My forensics professor, a Veteran SFPD detective of 40 years and an extra in Dirty Harry described polygraph tests as "pseudoscience bullshit we throw at stupid people to trick them into a confession".

[@captante9889]

Wise man.

[@HeretixAevum]

The best "lie detector" scene I can think of is the one from The Wire where they used a copy machine lmao.

[@lankey6969]

I wouldn't have believed you if you hadn't qualified it with the Dirty Harry bit.

[@LastStar007]

Notice he said "stupid people", not "guilty people".

[@realisticadvisor9931]

​@@LastStar007 he means poc

[@4203105]

Luke being a non-serial-killer? I have my doubts. I mean what kind of non-serial-killer owns birds? That is strictly a serial-killer thing.

[@boblister6174]

"According to what one of the elders said, taking an enemy on the battlefield is like a hawk taking a bird. Even though it enters into the midst of a thousand of them, it gives no attention to any bird other than the one that it has first marked."

[@alanhilder1883]

He sneaks in, opens the door,... adds milk to the bowl and eats that cereal...

[@QwoaX]

He's just an occasional killer.

[@mastaw]

It said "non-serial killer". So just a regular killer!

[@Megs125]

What normal person does wan show for so long with Linus

[@dogboy0912]

My brother failed 5 polygraph sessions scheduled across multiple months that were for a job interview. They are incredibly inconsistent. He apparently murdered and then unmurdered a guy based off their results. They had to keep rescheduling him because the results were so bad.

[@halostnight7557]

Maybe tell him to find a job where smarter people are working

[@stevejones69420]

Your brothers a necromancer?

[@King-js7nw]

@@stevejones69420I love you

[@notacreativehandle]

@@stevejones69420 That just made me laugh so fucking loud lol

[@beni9129]

Many people I know used to do the polygraph for their government clearances and said that, not only is it too stressful and annoying (especially because you have to redo it every 5 years), but also they often fail them 1 or 2 times before passing anyway, drawing out the entire process. Its also worth mentioning that the polygrapher is major element in how well you do on the test, some will blatantly accuse you of being a terrorist in an aggressive tone, while others will speak calmly and ask you less leading questions. Its becoming a lot more common for people to just stop renewing their higher level clearance if they don't NEED it.

[@Gatorade69]

Yeah, like I was thinking someone with Anxiety like myself would probably fail one super easily.

[@thebestdamager7400]

Sounds like a win for the government, as having unecessary clearance is not a good thing (speaking broadly)

[@MycaeWitchofHyphae]

@@thebestdamager7400 those recent leaks show that the gov probably gives too many people clearance anyway. And that the screening sucks

[@Catalyph]

Yup super stressful, my polygraph the tester made me feel like I was a terrorist when he asked about the worst offense I ever made was downloading movies. Also there is another sensor on the seat you sit on for the polygraph

[@brahtrumpwonbigly7309]

I was accused of starting a fire that burned down a barn when I was 10. They started wanting to do a lie detector test on me and my dad asked me in private if I believed I would pass should we go through with it. Even then, 20 years ago, I told him I was nervous and that I didn't know because I knew that could influence the test. He pressed me a bit, but left it at that and told the fire Marshall we would be refusing any and all tests of any kind and if they wanted more they could go to the police. I was innocent btw.

[@Rurik_Luci]

A polygraph is inadmissible in court Also it's pretty much the worlds most expensive blood pressure machine

[@rashira9610]

It's inadmissible in a court of law, but it IS admissible in the kangaroo court of parole violations. In my state anyway.

[@CCW1911]

It's admissible if the defense and prosecution agree to it but no defense is going to allow it.

[@Col_Crunch]

The test is inadmissible, but they can use your answers against you. Though I am sure a good defense lawyer could argue the credibility of statements made during a polygraph.

[@rashira9610]

@Steve Sherman Can't do that as a parolee. Refusal is a violation and is grounds to have you returned to prison. So even if you haven't done anything, you have to take this pseudoscience crap test.

[@rashira9610]

@Steve Sherman except we do have rights. And the fact that you think we shouldn't be protected from abuse of power by corrupt individuals says a lot about you as a person.

[@Phytom]

1:03 Yeah, my heartrate definetly wouldn't go up if I'd be strapped like this in a court and questioned whether I'd killed somebody.

[@iammaxhailme]

law enforcement doesn't use polygraphs in order to avoid hiring criminals. they use it to avoid hiring bad liars who might embarass them in front of congress when they fail to lie convincingly

[@rustyknott-W.D]

Cops are professional liars, that's why they always pass the polygraph. Cops are allowed by the court to lie in order to gain a confession. It's fundamental to their profession to lie and they are very good at it. I was questioned once and the cop was telling me to tell the truth so he could trust me. Then I caught him in a lie and the interview was shortly ended. Apparently, he didn't realize that trust is a two way street.

[@sutton4791]

Hearing how all this works would already make me frozen with anxiety, before the test would even start.

[@youwouldntclickalinkonyout6236]

he blinked at 0:18 as the transitioning was happening

[@Surelockohms]

Use your 5th amendment.

[@Nitidus]

@@Surelockohms Why do Americans always assume that everyone in the world is American (or arrested and interrogated in the US)? Large channels like this one are known for their very diverse international audience. (Apart from the fact that it's almost all men.)

[@Surelockohms]

@@Nitidus I had that thought but I would hope you'd know if it was relevant to you or not.

[@Bill_Woo]

​@@youwouldntclickalinkonyout6236 Yes, that's correct! You are a god, sir. You should have one million "likes" for that amazingness.

[@dirtydirtmcgogurt]

The Inventor of the Polygraph Machine, John Augustus Larson, regretted inventing it. According to his Wikipedia... "Due to differing methods of using his device that Larson felt were incorrect and abusive by some law enforcement, he eventually came to regret having invented it."

[@captante9889]

There's no such thing as a "lie detector" .... only a "reaction" detector. And since the polygraph operator has exactly ZERO ability to know why a person reacts to a certain question a certain way beyond assumption, they're near-worthless for sniffing out lies reliably. And whats worse the cops KNOW THIS very well.

Even the -psychophysiological examiners- -polygraph examiners- "lie detector" quacks know it, but they will assure you it's 98% effective (as did the "expert" in the Mythbuster episode about "lie detectors"). Given that they earn their living from people believing.

[@ArniesTech]

There is no better lie detector than an angry mom who just called you by your first AND last name. Better confess to prevent worse.

[@krinniv7898]

See, Luke's a normal killer, not a serial killer

[@keithduthie]

Nah, he's a massively-parallel killer.

[@johnbash-on-ger]

@@keithduthie So ... he's like a gpu then?

[@spadaacca]

I use a lie detector every morning when I talk to my pineapple, to assess whether it's rotting or not. It's been 17 years for the fruit.

[@TheDarkPreacher65]

I could never pass a polygraph, even if I told nothing but the truth because I have asthma, PTSD, low blood pressure, and a sinus arrythmia in my heart that causes my heartrate to vary with inhale and exhale. It's not steady, and therefore would make everything read as "lie".

[@Zyo117]

Wait that's a thing? I thought the heart thing was normal. Well damn.

[@yanivrubin4166]

Wouldn't that be foumd in the "baseline" part of the poligraph tho?

[@Artyomthewalrus]

That being said, they start with a baseline. They ask many questions. If you naturally have a high heart rate and irregular breathing, that will be taken into account. If you get nervous for every question, even when they know you are telling the truth, that will get taken into account. High heart rate doesn't matter. Changes in heart rate do. It's very similar to medicine. Having a low or high heartrate is often not a concern, however if said heart rate dramatically drops or increases - it can mean someone is in medical distress. Heart rate readings, blood pressure readings, etc are all virtually useless in medicine if they are only taken once - they must be continually tracked for changes to have any real significance.

[@TheOriginalFaxon]

I'm actually in the same boat as you but I've never had problems passing one, at least in high school anyway when we had one to mess with at my school. I was just so chronically stressed that any additional stress just registered at my normal levels. They don't use a static baseline for the test, it's based on the average for the individual user, and they ask some questions at the start to calibrate it. all you need to do to fake a lie response is put a tack in your shoe and press on it, or something similarly painful, and you can fake lies and truth as needed just about. Either that or take a valium beforehand, the one kid who was prescribed it was so baseline through the whole test that we weren't even sure if he had any emotions at all.

[@Immudzen]

@@Artyomthewalrus Well they don't actually take it into account because polygraphs are not based on science. It is just made up garbage. So you account for something the same way you account for a dowsing rod or a magic crystal.

[@arithex]

"It's not a lie .. if you *believe* it." -- George Costanza

[@kaleckton]

Linus forgot the most important thing in this. Anything you say before, during and after the test can be used against you in court. They don't need a warrant and it's considered to be voluntary information so you don't even need to be under arrest. So you can state a fact after passing the test and the administrator for test can testify against you. For some it's even a strategy to talk you up, especially if they have you with no lawyer. Or at least like this in the USA with some differences state to state.

[@vaclavmajer5488]

so you are saying he forgot to say something MOST IMPORTANT which is very specific to USA when they have international viewers and even themselves are not from USA? okay

[@BrowneyFolf]

who tf cares

[@POverwatch]

@@BrowneyFolf Clearly not you but unlike Kaleckton who added an interesting point to the conversation, you wasted your own time and made yourself look like a jackass.

[@JohnnyYeTaecanUktena]

@@vaclavmajer5488 Pretty sure even in Canada anything you say or do can be used against you in court as most of their laws and constitution or charter of rights as they call it is based off of the USA

[@keeb__]

And often cops are looking for a guilty verdict despite the actual outcome.

[@littleboyred1]

As someone who's neurodivergent and been through a bunch of, to put it nicely, _unfair treatment_ toward me and my circumstances- Explaining _literally anything_ is both challenging and stressful to me. Especially anything with even the slightest implication of being accused of something, even inconsequential things. Telling the truth is also _more stressful_ to me than lying, due to fear of critical, truthful information being considered false if i don't explain myself _perfectly._ If anything a lie detector might be the opposite of helpful for someone like me.

[@dare2liv_nlove]

Fellow neurodivergent here. Commenting in solidarity. 😊

[@bp9696]

How do you know you’re neurodivergent

[@dare2liv_nlove]

@@bp9696 If you (or anyone) suspects that they have some extra-serious difficulties navigating through life or relationships, don't be afraid to go consult a mental healthcare professional for a diagnosis. ☺

[@yoyoma2026]

@@dare2liv_nlove isn't that normal?

[@indigo-lily]

@@yoyoma2026 No, having extra-serious difficulty is not normal, by definition

[@scrapperdudeGA]

I did 3 lie detector tests in the 90s. I passed all three even though I was flat out lying during the first two. Very simple technique that is undetectable and easy.

[@captante9889]

Only stupid people trust polygraphs.

[@SpaceRanger187]

As an Army Seal Ranger I've been trained by the CIA to be able to pass a polygraph,I would tell you but then..well you know😂

[@scrapperdudeGA]

@@SpaceRanger187 ya, it's mind over matter. If you don't mind, it don't matter.

[@iwontliveinfear]

The best thing to remember about the polygraph machine is that even its inventor said it should never be used as a lie detector as it is far too subjective and easy to manipulate.

[@filiphabek271]

Imagine if a politician took a poligraf test. "I was practicing for this during my whole carer."

[@tubewatcher77]

System Overload! System Overload! System Overload!

[@qdllc]

Never, ever, ever consent to a polygraph. They are universally unreliable, subject to interpretation, and actually tend to incriminate the innocent. In private applications, you should avoid them.

[@loafy2]

Thank you for making this video. The more people know about the massive amount of doubt behind the "science" of lie detectors the better.

[@peterfconley]

Always refuse any form of interrogation that is inadmissible in court.

[@captante9889]

Actually refuse any kind of interrogation EVER no matter what and ASK FOR A LAWYER.

[@bargh70]

Polygraph tests are the buzzfeed quizzes of the judicial system.

[@Immudzen]

Come on that is unfair. Buzzfeed quizzes are much higher quality and more reliable. ;)

[@Sylkis89]

When I was studying law in Poland at the university over a decade ago, during our psychology course we were told that variographs/polygraphs can never be treated as a valid piece of condemning evidence in court. that I does not detect lies, but an inevitable physiological response nervousness that cannot be controlled as it is way too slight and too subconscious to tame it even for people with ASPD (and other disorders colloquially called sociopaths and psychopaths), so although on a properly calibrated and fully functional machine it is not possible for a lie to pass as truth (unless a minor lie about things that don't matter to a person like what is the colour of your notebook's cover or something meaningless like that that it won't evoke an emotional response, and there's also the issue of the machine is simply malfunctioning or being calibrated wrong) but it is an absolute festival of false positives with people being truthful but so nervous that the result still makes it seem like they're lying, and that is regardless of calibrating the machine with control questions at the beginning (a step which can be also abused deliberately by people who know how these machines work by hiding a pin in a shoe and inflicting pain to themselves on the foot during the calibration stage, etc.). That they're basically rubbish and should never be used in courts and their validity, regardless of the outcome, should never be taken seriously. And especially it's dangerous for anyone accused of something they didn't do but are obviously upset about, especially when stakes are really high like being accused of child molestation and such, obviously people who never did such a thing will be reacting very emotionally when asked a question about it and a polygraph/variograph with make their denial look like a lie... it's an insanely dangerous room for abuse and miscarriages of justice especially when false accusations of the most vile things are at stake and could easily lead to ruin innocent people's lives - especially in ways that even if the court rule's someone's innocence, the reputation of the person is going to be tarnished, people will not trust that person, will consider that person from the previous example to be a vile paedo that manages to escape justice while he/she should be rotting in the harshest tier prison, that person will be ostracised in their social life, lose career and likely commit suicide. And especially if that person had a false positive on a polygraph/variograph, most people don't understand it's nto a lie detector and will not understand the court's ruling and will assume corruption or something. It's just wildly dangerous in so many ways.

[@TemplePate01]

I can attest to this. I failed on my polygraph to get into a city job due to lieing about abusive behavior. I've never punched or been punched by anyone... The interigators ended up leaving me in tears both times... My faith in polygraphs vanished after the second time... Same results too.. no idea why :(

[@thebestdamager7400]

clearly a serial-killer

[@TemplePate01]

@@thebestdamager7400 caught me

[@goffe2282]

As I recall the guy behind the polygraph was furious at what his work was perverted into.

[@439bananas]

fun fact, a show in a the uk (specifically the jeremy kyle show) used to use the lie detector test in order to detect lies by its guests (it was basically the jerry springer show). because of this, it was axed by itv due to the suicide of one of its guests (after failing the lie detector test), and was heavily criticised by the digital, culture, media and sport select committee for these reasons

[@TheCainabis]

My friend had 65k stolen from my house (which I was keeping safe) I was a drug courier for him, he booked me and another courier in for a polygraph test, nervous as hell I carried on with the test with nothing to hide! I even failed on questions that were true, I got a 99% deception rate and he believed the polygraph over me and put a hit on my head! (As of now it’s still continuing) these things are absolutely bull sh*t

[@mutt-dev]

Lie detectors should not be admissible in court, and there's a lot of people both in the courts and in law enforcement in general that don't understand how inaccurate they are partially due to being misled by tabloid reality day dramas (We tested Angela and asked if she's ever cheated on Jeremy and the lie detector shows... she did NOT TELL THE TRUTH!!!!) However, they have an amazing track record for getting no so smart criminals to admit to their crimes. "John, you said you were here at this date, but the lie detector shows you're showing readings for deception.", "No... uh maybe.. I uh, actually Ya, I wasn't where I said I was I just forgot!"

[@ZeldagigafanMatthew]

I'd go one step further and apply Fruit of the Poisoned tree from that point on. In layman's terms, not only is should the polygraph NOT be admissible in court, but neither should anything done or acquired using the polygraph as a basis.

[@alaskanmalamute101]

Jerry Springer used them so they must be true 🤣🤣🤣

[@ThaexakaMavro]

lie detetors are not admissible in court

[@brahtrumpwonbigly7309]

@@ZeldagigafanMatthew that's too far.

[@MrSongib]

The court sometimes forces you to lie. xd

[@jody.lumbantoruan]

linus blink on 00:42 00:43 00:54 00:56 01:15 01:18 01:20 01:30 01:35 too many of them, and I too lazy too continue

[@Snarkbar]

The point of a polygraph is to get you into a room with a trained interrogator who has some voodoo science BS to scare you with. The important part is the trained interrogator.

[@FuntCaseUK]

Had a lie detector test once in some man’s house. The seat I was sat on was wooden and rock solid, I was hooked up with chains around my chest which restricted my breathing and my arm was being squeezed to DEATH…the whole situation was stressful enough and those factors made me even more stressed because I was deeply uncomfortable mentally and physically. According to the taker of the test I lied and he claimed it was because on one question my “butt twitched” there’s fore determining it was differential to my base. I was in that chair for a good amount of time in a stressful environment and his judgement was a twitching buttock. Total scam

[@jordanabboud6839]

Funtcase !!!

[@mike123abc]

17 seconds before the first blink, I thought perhaps they had edited out all the blinks. It is right as a transition like they were trying to cut it but if you watch at 1/2 speed you can clearly see the blink/

[@jmugurr994]

Also at 0:35

[@regenjacob]

@@jmugurr994 also at around 4:01

[@rames7924]

& also at 0:18 he blinked as transition roll

[@MysticMylesZ]

1:50 Dan is going even further beyond! What out, we don't know if this is his final form!

[@Primus1243]

Even funny seeing as the inventory basically called his invention a disaster. And that it should have never ever been made once he saw who was using it and how many people got falsely arrested.

[@Lord_zeel]

Psychopass is a really good anime. Basically, they do super advanced sci-fi testing on people to decide if they are "criminals" or not. This can be done wirelessly with a scanner, and they put these scanners inside the guns that cops carry. They can't pull the trigger if the target doesn't score high enough on the test, but if they do... well they are allowed to shoot them, even without direct evidence of a crime.

[@Altair00rion]

That’s a really excellent succinct explanation

[@murdacai4274]

I’d be so nervous about failing that I would fail

[@Bill_Woo]

You hit it right on the nose.

[@patrickdoty6644]

Wouldn't have thought you guys would do a polygraph vid. Nice

[@daltonmckee4788]

A friend of mine worked for a company that made lie detectors. He legally cannot take a polygraph in a legal dispute. Pretty funny/random perk

[@Visstnok]

The perfect killer.

[@BiswajitDas-wp9gz]

Dennis is serial killer wow 😂

[@severeerror52]

Fun fact, the creator of the Lie Detector, William Moulton Marston, was also the guy who created Wonder Woman. Worth looking him up, he was...an incredibly strange man, to say the least.

[@alanhilder1883]

You are hooked up to a lie detector, do you understand? Yes { BOOM } (Thanks Homer.)

[@LRM12o8]

Isn't it great that we decided to call these devices "lie detectors" despite them having a high false-positive rate and actually being better at confirming that the suspect speaks the truth? Also love how people who made bad experiences with the police in the past (i.e. discrimination, police brutality) or just are nervous in front of doctors and authorities are far more likely to fail the test despite being innocent. We humans just love to bully the insecure, do we?

[@Tomtom5893]

with this technique i would probably "lie" to any question...i get stressed if someone wants to see my ticket even if i have one. or when police officers walk past me, my pulse goes up even though they don't even notice me

[@captante9889]

That would work.... and is ALL it takes.

[@skyrimax]

I remember when Adam Conover did an episode covering lie detectors in his Adam Ruins Everything serie

[@vamwolf]

Great series. Sad it was cancelled

[@agnotwot7997]

I lied a TON on the last polygraph to get hired on the police dept. Passed without an issue.

[@sephondranzer]

Okay this is such a cool video! It’s so cool to see you guys expand on different technologies besides computers/servers and stuff.

[@DenisWilsonSouzaRosa]

0:34 - You blinked

[@DecanFrost]

who remembers the flood of lie detector apps? man, a lot of relationships got fried 🤣

[@freddiejohnson6137]

I took part in a polygraph study for my local university I lied throughout and passed it as telling the truth. All because I controlled my breathing.

[@PvtPuplovski]

LMG is finally big enough to use their own employees for stock image replacements!

[@kgury]

I've had a poly for my job. Good stuff

[@_mike]

An MRI scan is currently the most dependable method for detecting lies. This is because when we lie, specific regions of our brain become active, and these areas can be observed through the scan.

[@afterburnerfox]

but you dont lie when you sleep mostly because you don't usually speak while sleep

[@tudalex]

Iirc that still doesn’t work for people who convinced themselves of a lie, because for them then is just remembering the lie that they repeated themselves. And this can happen to people who have just suffered a trauma. Their mind can’t process it and they just think that something else has happened.

[@well_as_an_expert_id_say]

​@@afterburnerfox What? You aren't sleeping during an MRI....

[@_mike]

@@tudalex No, it doesn't work that way. The creative part of the brain would still be active, even if they have "convinced" themselves that they are telling the truth.

[@wasdawasda3849]

fMRI I believe specifically.

[@jackboudreaux5883]

The first thing to do if asked questions about any serious crime is say i want to talk to a lawyer first. If the lawyer suggest to take a polygraph to "prove your innocence" find another lawyer, if they were appointed because you could not afford your own you are screwed!

[@June26A7]

You blinked at 0:35

[@julio_9912]

I was going to say that

[@BravoOnyxNewt]

2:13 blinked

[@m3redgt]

My biggest question: how did you come up with that particular topic right now and... did colton play a role in that? ^^

[@camperxlz]

You said: "I haven't blinked a single time this entire episode." That was determined to be a lie.

[@photobygil]

This was a great overview, informative, interesting & to the point. I hope there's a follow up video, because I actually expected to see Linus himself subjected to or administering a polygraph test. That would be even more interesting, & I'm sure the staff would have fun with the concept!

[@alanhilder1883]

Why did I see you suggesting another Collab with Electoboom? ( may have misspelt that )

[@nickglover]

Having failed a polygraph, or at least that's what they told me, while exclusively telling the truth, I do not recommend ever agreeing to one.

[@CasepbX]

I would be so stressed out just being in that environment with that contraption stuck on me that it would think I was constantly lying about everything lol. It would probably say I'm lying about my own name ha.

[@hosh6132]

6:50 great way to get double ad rev😂

[@TommyDavidVerbal]

A liar talking about lie detectors. How ironic

[@Thezuule1]

They aren't admissible in court. That's really all you need to know.

[@spotandjake1008]

I really liked this video. I think polygraph tests have their place, they can still hint at weather someone is lying or not but its good that they are not usable as court evidence because of how flawed they are.

[@mysticmarble94]

But what good would that hint be if that's all it is ... a hint.

[@Secret_Takodachi]

Learning how to throw off the readings & how to supress your autonomic responses through practiced effort doesn't even require difficult training, mainly just time. Oh and I think you meant to say "whether" not "weather" but aside from the typos & flawed understanding of how the tech could be used, your point was understandable....but it's still wrong.

[@spotandjake1008]

@@mysticmarble94 It gives a place to start looking

[@spotandjake1008]

@@Secret_Takodachi I mean yeah that is 100% true, but a lot of people do not realize that which is why it is still a somewhat effective tool. the real problem with the tech is the way it is advertised to be unbeatable and a single source of truth.

[@SilvyReacts]

A hint isn't very useful if you can't reliably know if the hint is meaningful. You might as well flip a coin and call it a hint.

[@jaygames1980]

In my state they are non admissible in court. They only seem to be admissible if the state wants the result to help convict someone. How convenient is that.

[@M82Predator]

Notification squad!

[@BacnManYT]

5:23 If you are wondering that tank is called the T-34-85 the 85 part being the gun calibre, 85mm! Have a nice day comrade :D

[@clusterstage]

When a person isn't aware they were told a fake info, they might relay that information as "honest" as they can. They are not lying, but they are definitely not telling the truth.

[@clusterstage]

just like your AMD video. AMD told everyone how amazing their chip is, and many ended up echoing what they heard. They were honest to what they relayed, but they were not telling the truth.

[@FPVwineUK]

I don't want to get too deep... But even in a crime scene, 5 witnesses may all be telling the truth... but all the stories may not line up! Becomes a deeper philosophical question at this point.

[@keeb__]

Not to mention that law enforcement doesn't even have the best intentions either.

[@yoonitvector]

My brother got rejected from a job because he failed his polygraph, he pretty much wasted 6 months assuming he had a job and not doing anything

[@moagoo5714]

There was another type of "lie detector" that didn't really check for lies, but for brain function. I think it used mainly images, and maybe some sounds. It sequentially showed a bunch of stuff to the person being tested and measured their brain reaction to what they were exposed to. It showed them familiar things, or things they'd seen before, and unfamiliar, and then also things from a scene of a crime(s). I think it compared everything shown to prove if things from the scene of the crime were seen by the subject or not.

[@artificergunn3065]

I have anxiety, and get stressed suddenly and often for no good reason. So I would never take one, I’d probably detect as “lying” totally at random.

[@gabrielesh7916]

I passed a polygraph test when I got a job with my state. I no longer have that job since I went to private companies that pay more, but I had minimal information and no training.

[@ArniesTech]

Seriously, as a kid I always wondered why they even investigate. Put everyone on a detector and voila 😅

[@I_am_ENSanity]

Makes me remember when The Mythbusters tested some myths on beating a polygraph test.

[@ShieldAre]

It has a high rate of false positives, and works the best on those who are the worst at lying, and most likely to be intimidated. Which to me says that it can only detect those liars who you could probably get to confess anyway, and gives a clean pass to the most sociopathic criminals. Which makes it pretty much useless, which is why it isn't admissible in most courts.

[@yuussee]

Matt Orchad made a really good video about lie detectors, I suggest anyone that wants to learn more about polygraphs to watch that video.

[@TheKolikolik]

Best thing about this video is that Linus is wearing an RGB shirt, but the green (I think?) got caught with the greenscreen, so they just greyed out the keying there. Honestly, I'd buy just a "RB" shirt like this, it looks good!

[@johncochran8497]

I had to have a polygraph some years back for a security clearance. There were some issues with my first attempt and personally, I felt like there was a "game" being played where I wasn't informed about the rules. So I was scheduled for a follow up. Before the follow up, I decided to do some research. One piece of data I found was that the government had a classified study about the effectiveness of polygraphy. Of course, I never got to see the actual contents of this study. But, if the study reflected what is available publically, I too would have classified it. In a nutshell, the publicly available information boils down to the following: As a method of determining whether or not someone is lying, it's useless. But as a method of eliciting a voluntary confession from a naive subject, it's extremely effective. The key element is "naive subject". So in order to retain it's effectiveness, those that are being polygraphed have to be ignorant as to the limitation and effectiveness of a polygraph.

[@jakesteel2423]

The very easy way to beat a polygraph, 1 word, lawyer.

[@TjPhysicist]

6:13 it's like these people never learn, the entire problem with the polygraph was that physical symptoms of something as vague as "lying" cannot be quantified in such a way as to be accurately categorized...and again with trying to find physical symptoms and categorizing them into neat little buckets? the MRI thing, MAYBE, that's honestly the most sensible one of the lot because at least it's measuring brain activity - something which has been shown to be predictable enough (and even then you get into similar issues of habitual liars vs anxious people and neurodivergent people).

[@Marvin-mq9rk]

All you have to do is stress your self out during the control questions and the relivant questions it’s easier than you think just think of something scary or very unpleasant like puke, self harm etc

[@adriankerrison]

In the words of George Costanza: "it's not a lie if you believe it"

[@thesmiffable]

Law enforcement have a very bad habit of relying on pseudoscience to help them secure cases

[@Olav_Hansen]

I have practiced holding my breath for a while, until I get to keep my breath for close to 3 minutes. When you mentally wind yourself up for such an attempt, you will actually start to breathe in a very controlled manner, lowering your heartrate (lowering heart rate is the easiest way to hold it for longer, once got 100 heartbeats in 2 min 20 sec). Once you learn this trick, if you apply it at the right time it would be a childrens game to beat those kinds of lie detectors. And while 3 min is a lot compared to someone that hasn't practiced it, there's plenty of people that can do 5 to 7 while freediving. Those will get even more conscious heart control.

[@Lislio]

Even if u didnt do it, if someone asks you if u did while u know if u mess up they will think u did is stressful and will give false positives

[@exMuteKid]

I’m pretty sure it’s not the air in the lungs increasing the resistance but rather the stretching of the skin as the chest expands causing the resistance between the two electrodes clipped on the skin to change. No reason why the air in the lungs would affect it directly because as you said, air is an excellent insulator

[@custard131]

while its questionable ethics maybe the stress of the test is the whole point? rather than having the machine actually give evidence of whether you were lying or not, they put the suspect in a stressful situation, tell them the machine says they are lying and hope the crack/slip up

[@RandomnessChannelYT]

0:18 right before the scene changes to black and white. Linus blinked. Go frame by frame

[@shinestargaming]

That's why, during a lie detection test if a person admits he/she had committed the crime. That statement is not accounted for crime instead the examiner asked some other questions regarding the same in which the person has committed the crime. If those answers matched with the real evidence then lie detection test is concluded otherwise this test's verdict accounted as a failure.

[@TjPhysicist]

3:47 this is actually one of the reasons why our bodies react the way it does to stress. Increased heart rate, sweating, decreased appetite - all symptoms of stress and anxiety are all supposed to help us in our respond to stressful situations like run away from a predator or fight one off. but since our bodies can't really differentiate between sources of stress what would normally help us in a situation we rarely encounter today - say you're face to face with a murderer, having increased heart rate and decreased appetite should help you run away and hide better, is just something we have to suffer through in situations where it wouldn't help at all (e.g. being stressed by an upcoming exam).

[@Deadshot_Raptor]

Passing a polygraph is easy even if you are lying if you control your breathing. I've passed 3 different ones while lying through most of it just because of keeping my composure.

[@DamienGGW]

you blinked many times didn't need a lie detector for that one... I still check though 😂

[@Mr_Riffman08]

I always wondered why polygraph test weren't used more often in the justice system.