What's invisible? More than you think - John Lloyd

View full lesson on ed.ted.com ed.ted.com/lessons/what-s-invi...
Gravity. The stars in day. Thoughts. The human genome. Time. Atoms. So much of what really matters in the world is impossible to see. A stunning animation of John Lloyd's classic TEDTalk from 2009, which will make you question what you actually know.
Lesson by John Lloyd, animation by Cognitive Media.

[@TimestopperHay]

interesting, very interesting. *strokes invisible beard*

[@Opeth1991]

😂😂😂

[@Mofo314]

Made my day, thanks sir.

[@slimiestdemonic]

this made me smile

[@higuys8154]

+Sugar Flower that made me smile

[@tygonmaster]

*clears throat and nods in agreement* Very interesting, yes. *strokes non-invisible beard*

[@somaannn]

those kids came to enjoy a carnival ride and got a science lesson instead

[@shaksiyat]

Ha ha ha

[@mercymylordj5412]

I hear you, but this type of learning is fun.....said the guy who's replying to u 3 yrs later...

[@jackandy1736]

scam

[@xcalixus3794]

Philosophical too

[@somaannn]

@@xcalixus3794 Stop replying to a 4 year old comment wtf

[@this_mfr]

I'm surprised he didn't mention the fact that visible light is just electromagnetic radiation, which technically is invisible as well. We actually exist in pitch, stark darkness. The only reason we can "see" anything is because our brains are able to take the electric signals generated by the rods and cones in our eyes that are energized by certain electromagnetic wavelengths, and then turn those signals into an "image". But the image itself exists in our mind, nowhere else. Everything we see is just a perception of what is actually there, and everything that is there is there in utter darkness. We just see energy reflected off the objects, that's all.

[@SwoleTommyPickles]

This is almost depressing

[@raeannawilliams3180]

+Virgil, Rock Star of the Burning Abyss don't worry it's totally depressing

[@davidndiulor8428]

+It's Me sorry i couldn't see what you were saying.

[@Jrock420blam]

+Skeptnick You are right, the OP was just trying to sound super smart. Some animals can actually see ultraviolet light but we can't. Same with sounds outside of our auditory range. Evolution is an amazing and power force.

[@joroc]

We are immersed on energys, not on darkness.

[@sunshineforce]

I'm not a scientist, and I'm not familiar with something as complex as science, but I like the fact that he made us remember what curiosity feels like. That whole ''I know that I know nothing'' that Socrates said.

[@MelonLord8]

That's a paradox

[@armwrestlersanta]

Your acconuts age is almost same with mine

[@grungepants]

The auto correct on my smart phone is a fine example of artificial stupidity.

[@richtigmann1]

lol. I think you mean computer inaccuracy

[@MdSheraj]

@@richtigmann1 No, Stupidity - behaviour that shows a lack of good sense or judgement. I think he's spot on. I really don't believe we haven't invented artificial stupidity, it was a quote just for amusement like this talk largely was.

[@richtigmann1]

yeah

[@profaisalabbas]

So its artificial intelligence that created artificial stupidity.

[@Dumah2007]

yes ahahahahah

[@ElizaMogha]

I love humourous TED-ED talks!! And Socrates said it all a long time ago "Εν οιδα οτι ουδεν οιδα" = "I know one thing: I know nothing"

[@gloom_slug]

+Ellie Meli But you do know one thing.

[@JohnHMercer]

+skr47ch 無限 nothing is something, i think

[@ID-107]

Yes, this always bugged me. he knows that he knows nothing which means that he knows at least that, which is not nothing. But years later I think he meant something like "There is so many things to know and I know so little of it that it is almost as if I knew nothing." Or maybe that he knows stuff but he only thinks he knows it and it can be totally opposite of what he knows thus he can know nothing for sure.

[@ElizaMogha]

There appears to be a paradox there. He did mean, though, what you suggested first: he came to a realisation that there is such a wealth of knowledge out there that we/he know only a fracture of, so it's almost as if we know nothing, it's that little.

[@ZackRamsey14]

+Ellie Meli Operation Ivy: All I know is that I don't know

[@jevonmcpherson8054]

"the more light there is the less you can see" think deeply about this phrase.

[@umnikos]

_You can't see the forest from all those trees!!!_

[@anamikamishra4052]

King Kitteh um..I am stupid I know..but y aren't our eyes real? (I think there's some deeper meaning here that I don't get.)

[@lmao2302]

Yeah when people flash light on me I can't see.

[@mehgamer467]

King Kitteh I think you are taking it out of context. Don't think he meant that as an "edgy" thing. Just as light can show us certain things, it can also hamper our vision and take things away. Stars, certain creatures, etc. People often conclude this with night time, but to a lesser effect daylight can do the same. but at its base, as people already have mentioned, blinding lights are the best example.

[@mehgamer467]

yeah its not really so much a deep thought. I agree and now understand what you mean. Sounds more profound than it actually is. I "think" OP basically jsut meant that his mind was blown thinking about that lol. Maybe.

[@Farahelmoh123]

i just questioned my whole existence...

[@dearrain5639]

lol me too :o

[@cgmz13]

Is very simple you exist thanks to your parents. That's all.

[@NoMurci]

and now you're invisible

[@meeeeeeauuuuuuuu]

Yes because rest of it exists in your mind.

[@Amar061]

And how did it answer?

[@AmNeSiAPvP]

Everything that's ever happened in your life up to this point has lead to you reading these comments and stopping on mine in particular, you can do great things with your life, that's why it was given to you as an experience. Be kind, save a life . Pay it forward!

[@ryanharleston1941]

I could but I'm to tired 5 more minutes

[@benjamin181]

do you think that's the only reason were here? I mean we do only experience what we go through and have some sense of free will. but when were gone, wtf happens? GONE! or are we? so crazy to think of that. forget who said it but.... coincidences are gods way of keeping Himself anonymous. I like what you said about the events that lead you places. I'm a strong believer in that we should be respectful and patient with most people because in the end they didn't chose to be born where they were born and the events they go through as infants. never the less all this affects them for the rest of their life and they I a way become results of those circumstances. It really destroyed my Christian beliefs because I asked myself, why would God judge people if they ultimately didn't have much choice? lately ive been thinking we are all just animals and the only thing that makes us better than an animal is the quality of education we receive. in the animal kingdom there is a hierarchy and there are pests and exotics and meat eaters and herbivores and everything in between. maybe the human species is just another animal and that's why its ok to lock some animals in a cage. idk just a long ramble. but yeah funny how one of the most rewarding things a man can do is help someone out.

[@FairyRat]

I don't like life. In the matter of fact, I despise it. It's a very bad idea that brings more bad than good. A rock can't suffer and be unsatisfied, it can't be born and then abruptly die, whence life bloody can and it's pretty much everything it does. If we can do anything it's help other life forms to suffer and be unsatisfied less. Buddha said there is a way to end this bullshit, but it's a damn hardcore one, despite being crystal clear and as simple as it gets.

[@jalengee8421]

Benjamin you should know as a christian god judges on the choice and how you are as parson . its not controlled because you have your free will thanks to the full consciousness given by God .he knows but isn't controlling unless asked. and there are other things that make us different from animals like our ability to feel , think and survive differently etc.

[@ethanwrightson5586]

I love life! Yes, there's plenty wrong with the world but there's no point being miserable about it. Smile (it actually puts you in a better mood), be happy and show others how to be happy by being a good, kind person.

[@user-zd5pe7qh5n]

The ways he plays with words, and twists them to create abstract meanings out of literal concepts is extraordinary

[@cesaradrianherrera1382]

I just got until twists.

[@patrickkilduff5272]

Technically, you can see the past, since light moves at a finite speed.

[@Thetwinkly]

+Patrick Kilduff Technically you can't see the present

[@ourochroma]

+Patrick Kilduff Technically reality is non existent... and technically frrrrking evrrthig is confusing.. but hey... what do we even know?? :D (so happy not to know)

[@gauravm90]

Can we live it.!?

[@josephang9927]

You see the light, not the time.

[@TELEVISIBLE]

technically you never see the light. so called light is manifested in your brain, aka is all in your mind.

[@Ultrasound700]

Teded's best video, in my opinion.

[@haloandrei]

True.

[@BohemianFish]

***** I can't be sure, since I'm only going on his name and voice, but if this is THE John Lloyd I'm thinking of, he created two of my favourite TV shows in Britain: Blackadder and QI.

[@BohemianFish]

***** Yep, I've just confirmed it; it IS the creator of Blackadder and QI. The first makes you laugh, the second makes you think.

[@passthebutterrobot2600]

Yea it's that John Lloyd. Also he was the man behind The Young Ones. He was a good friend of the late great Douglas Adams too, I'm a bit surprised he didn't get a mention!

[@cesaradrianherrera1382]

By far. It was a live podcast taken to comic.

[@mssaarahn]

I like this bloke, he's a legend.

[@terminator572]

Saarah N What is a bloke? is it like saying dude or fella? i kinda want to know.

[@Stickycomix]

Dorvuzak Uzn Yep, exactly.

[@cesaradrianherrera1382]

Who is he m8?

[@mssaarahn]

@@cesaradrianherrera1382 Honestly I can’t even remember 😂

[@stearin1978]

the longest pun I have ever heard)

[@ipizza9941]

You can't see the future but you can see the past, you can't go to the past but you can go to the future. Technically

[@shoaibakhtar4389]

Wow 🤔

[@TheHiroClaw123]

you can't see the past you just remember seeing stuff in the past

[@rickandelon9374]

youtube is all past

[@vishvpower9330]

@@TheHiroClaw123 light travels at aprox 3×10^8 m/s so everything you see is in the past. You cannot see the present

[@teddy_pm]

@@avidschemer no.

[@lucaslayton3974]

There's no artificial stupidity? What about the Kardashians?

[@mhandnoaman8029]

those are Darwin survivors

[@imthatgringo3559]

+I'm that Gringo not necessarily their average ass family are the dumb ones

[@FairyRat]

Artificial stupidity would be a carbon copy of a human brain.

[@cryptosguns]

Assuming you're implying that the Kardashians are 'artificial', good joke If not, then it meant anything that's not organic/man made

[@darkwind14]

unfortunately that's not artificial. it's real stupidity.

[@2awesome292]

Yup we need artificial stupidity to prove that artificial intelligence can exist

[@umnikos]

It will be easier to create artificial intelligence than artificial stupidity...

[@definitelynotafurry2503]

Sadly we've already got plenty of non-artificial stupidity :(

[@umnikos]

Rachel the gosh-darn human the question is... How do we judge something as stupid or not? IQ?

[@definitelynotafurry2503]

That depends on the definition of stupidity. If stupidity is not knowing things (facts that can be memorized) then an artificially stupid machine is easy to make, just don't program it at all. If stupidity is being able to memorize facts but not knowing how to apply knowledge (like knowing that 1 km = 1,000 m but not knowing how to convert 0.7 km into m) then it would be slightly harder to program a computer to be artificially stupid. If you define stupidity as making bad choices with shaky reasoning (like you threw your rubber duck into the river because ducks live in rivers) then it would be very hard to program. We have plenty of examples of human stupidity (signs warning that there is a sign for example) that suggest the last option.

[@umnikos]

Rachel the gosh-darn human​​​​ stupidity - behaviour that shows a lack of good sense or judgement. Seems like the last one. Yeah, I think it's easier to make artificial intelligence than artificial stupidity. The main reason for this is that people understand logical decisions more easily than illogical ones.

[@WSUGLUE]

"And of knowledge, you (mankind) have been given only a little” (The Noble Qur'an, 17:85).

[@charlieangkor8649]

Mohamed or whoever wrote this shoukd talk about himself and leave others put of his unfair accusations and criticism.

[@kanameitsuki8130]

This is, without a doubt, the best video on this channel. It's interesting, engaging, provocative and somehow also manages to be extremely funny. I've watched this video so many times its borderline ridiculous.

[@sorwoggpm]

He asks, "Why are we here" and "What do we do about it" I would say if you can answer one of those, you have the answer to both.

[@umeshdesai6009]

Not really

[@XSONARIOX]

"What the others are here for, I have no idea," XD

[@GamerRusith]

Every TED-ED video I'm just mindblown.

[@jnwaasdorp]

Thanks for the lesson in humility.

[@iceybrice]

I feel like this has potential to be a stupid question but someone explain to me why every cell in your body gets replenished yet your tattoos stay untouched.

[@rabia1180]

+Icey Brice oh wait no your real question just hit me :O wow i never thought about that! i have no idea xD interesting question though

[@64saiengpuiasailo4]

+Icey Brice The reason they don’t disappear is because they are beneath the epidermis, which is the top layer which gets replaced. A tattoo isn’t actually ink, but very small particles which sit in the dermis. The tattoo isn’t actually a part of the body, so doesn’t get replaced. Source:From a website.

[@VinCentiments]

They actually have a TED-Ed video about that. I suggest looking it up ☺

[@iceybrice]

+Prof. Objection thank you

[@trollinu]

+Icey Brice Tattoos doesn't stay untouched. The body slowly breaks down the particles the tattoo is made out of. That's why tattoos fade over time.

[@IYQ1317]

I don't know what I was expecting to see from TedED, I just found the channel twenty minuets ago, but this was really incredible to watch. It was not only interesting, but inspirational. It poses questions to answers and makes me feel like the world is a lot more amazing then I probably give it credit for.

[@SpcGiraffe]

Nothing is truly invisible. What most people misinterpret as "invisible" is just what is outside their ability to sense or perceive.

[@ABunchOfRandomAnons]

+Samuel Cright That is literally the definition of invisible. "In-"="not", "visible"="able to be perceived".

[@SpcGiraffe]

ABunchOfRandomAnons Just because you are not perceiving something at that very moment does not mean you are unable to perceive it. If I am standing behind you not saying a word and you don't know I am there then I am only invisible in your perspective, but I am not truly invisible, simply your perspective is wrong. If applied on a grand scale then every perspective is wrong even the one which perceives that every perception is wrong. Since we have reached a paradox this is where most people get stuck. But what the paradox shows is that everything is both and neither wrong and right, visible and invisible. That it depends on the eye of the beholder; that the more that is visible the less that is invisible, and the more than is wrong the less that is right. This is the understanding that the most basic foundation of all (non-pseudo) sciences are based upon. That when we observe something change we are actually observing how our perception changes in response to a perceived change: how our perception changes our perception. Anyway, through understanding this we can understand that it is impossible to be truly invisible unless it is impossible to be perceived even by yourself. This is the equivalent of being dead and this is where my understanding hits a brick wall as I cannot perceive whether I can still exist if I cannot perceive. I imagine I would need to perceive myself in such a state to gain an understanding, and so we've reached another yet more complicated paradox: To perceive myself in a perception-less state.

[@freesolja1]

"true" invisibility isn't really what the general populace means when using the word though. To assume so is just dumb and it makes you look pretentious when you make a seemingly bold claim that only makes sense when looked at from an unusual angle

[@SpcGiraffe]

+Emery Reese why is it dumb to assume that a term means what the term means? by your logic scientists who use the term "theory" to mean a proven hypothesis are stupid. Your view is literally backwards. It's people who use the social meanings of words who are wrongly using them.

[@SpcGiraffe]

+Emery Reese also I very clearly specified what kind of invisibility I was referring to: the true/real/actual kind and not the vague and often poorly applied social meaning.

[@nebula6472]

"The more you know, the more you know you don't know"

[@ervinm.5065]

wait. atoms are invisible. we are made of atoms. we are all invisible!

[@chetansharma-dk8pm]

yes , we are invisible at metaphysical level, the subtler we would see, the matter will disappear , actually matter exist at only that level of frequency which is compatible with our human body frequency ,rest things are waves in this universe which is incompatible with our body frequency . where the science of physical world stops working , the journey of spirituality starts from there ,we should switch our mental perspective from physical to metaphysical............this is the only gateway to know.

[@elisabetepedrosa]

we can see atoms :)

[@Gunnplay]

chetan sharma Excellent

[@andrewb3744]

@@chetansharma-dk8pm s a nerd

[@antonduet]

You can see atoms, you can't see just a single atom, you can't see that 99% of an atom is empty space, you can't see that we are 99% nothing.

[@robertwilliammayers]

The timing and content of this TED Talk has made my year. Literally only yesterday I learnt the definition of the view that I too hold is called 'Ignosticism'. And today I find this. Fantastic.

[@jahjoeka]

I NEVER KNEW TED MADE CARTOONS THIS S AMAZING.

[@CAT-2323]

Yeah, I really like the animation style

[@sabaahmad384]

Love having existential crisis at 2am but in a smart way

[@antipoti]

Literally the best video on KZbin, period.

[@joanhoffman3702]

This was a incredibly thought provoking video. Thank you!

[@frozenfeet4534]

We will never be able to see the atom because it's smaller than a wavelength of light? You do know that electron microscopes have been a thing for at least 20 years right?

[@mickbubbles6806]

+Garen Crownguard Yes but I am told they merely see the electron cloud surrounding the atom, not the atom itself, which is much, much smaller.

[@NickH-ku2jy]

They still dont make us see the atom, they merely let us know that there is something. Like bumping into a wall in the dark...

[@lordilluminati5836]

+Nixk Huijer you never see anything at all by that criteria. your brain simply makes up an image from electron entering your eyeballs.said electron adquired its wavelenth(color) by bumpig into an atom.

[@dhx84]

+Mick Bubbles The electron cloud is arguably part of the atom.

[@__Paprika]

+patricio torre ... are you aware that your eye cannot see electrons and that it is not at all the way electron microscope works ?

[@lisaloves1224]

This is by far my FAVORITE Ted Ed Video

[@5005dave]

This is honestly one of the best videos I've ever seen. And I spend most of my life on KZbin since 2010.

[@FREE_WILL_DEFENDER]

one of the most insightful videos i ever watched brilliant man

[@professorschuler]

Quanta elegância nessa explicação, amei o jeito simples e humorado de temas desconcertantes! TED é o culto semanal dos devotos à ciência.

[@leoramcnamara338]

these are some of the best video’s on this website. props to the animators, truly amazing work!!

[@joy1196]

Honestly, this is the first Ted talk I'm watching on repeat..

[@crimsontankie5210]

I have no idea why I liked this so much

[@anamikamishra4052]

Nikhil Goel same here😂

[@FREE_WILL_DEFENDER]

one thing science and people have taught me our world is all perspective

[@pratimamohan5014]

I (today at the age of 23 ) am able to connect the dots of what you are saying .Brilliance in between the vagueness of known and unknown is invisible. Thank you Ted-Ed .

[@smallstudiodesign]

That was somehow comforting as much as it was sobering.

[@DownFlex]

3:17 i love the caricature of Dawkins there xDDD

[@angel_cat]

+DownFlex I have yet to find an atheist who refuses to believe that humans came from apes. Not that that's very relevant. But yeah.

[@DownFlex]

+princesslibra20 Except for the fact that this has barely anything to do with what I've wrote, I acan answer you quite easily. The reason is, that we do not come from apes. We share a common ancestor. Means that hundrets of thousands of years ago, we were seperated by geography or even sexual selection and that was the point, when apes went their way and we went ours. Every "Atheist" who says we are coming from apes is an uneducated idiot. (Also depends on how you define "ape")

[@angel_cat]

In that perspective, it is much easier to say that every creature share the same ancestor. Some plant chromosome share more similarity to humans than apes. There are even theories about origins from lizards. Basically, all still theories. I'm still looking for the one that would match up most accurately.

[@trapsenpai]

+princesslibra20 What "theories about origins from lizards" are relevant and being taken seriously in science right now? The cohesive collection of scientific information we have supporting evolution is completely separate from any wacky speculations that pseudo-scientists come up with. It doesn't make sense to group the theory of evolution - the one with an overwhelming amount of evidence that's been gathered and has yet to be proven wrong for the past 200 or so years - with "theories" that have been debunked and/or have never held any actual merit (in that they have not endured the scientific method, haven't been supported by repeated experimentation and evidence, etc). What you just said is like saying, "Some people say the sun is just one star out of trillions in the universe, while others say the sun is the only real star and the rest are just for decoration. But those are all just theories." It's easy to see what's true and what's made up when you're well-educated on the topic. I suggest reading some books on evolution like The Greatest Show On Earth by Richard Dawkins, Undeniable by Bill Nye, or The Origin of Species itself.

[@trapsenpai]

princesslibra20 "Apparently" to whom? The overall consensus among biologists is that evolution definitely happened, is still happening, and will continue happening until life on earth completely goes extinct. There is no other way to explain the transfer of DNA from generation to generation, the mutations and genetic recombination that occurs within these DNA transfers, and the genetically unique beings produced as a result. We have the DNA evidence to prove it, and any unbiased eye can easily see the morphological similarities between humans and our ape cousins. Percent of DNA shared is not the sole indicator of genetic relationship, and doesn't tell you anything about where the evolutionary lineages split off - for that you should refer to the tree of life: www.wellcometreeoflife.org/interactive/ And the piltdown man hoax (which by the way has long since been rejected by evolutionary scientists) would have been far from the only archaeological evidence supporting our relationship with the other apes; a quick google search for "hominid fossils" will pull up several reputable pieces of fossil evidence. I can safely assume that you haven't even read the Origin of Species and are basing your opinion on incredibly limited knowledge of evolution & how it works.

[@CARPEDIEM-lo7xj]

Absolutely brilliant presentation. Loved it 😍

[@table9611]

Honestly, one of the BEST Ted-es's I have seen

[@mushrafaltaf]

I keep coming back to watch this! What a brilliant speaker.

[@mushrafaltaf]

I am back again!

[@paninicares2474]

"We are here on earth to help others. What the others are here for, I've NO idea" I almost jumped into a dark hole. Oh my.

[@darkfeather6857]

Obviously to help us. If I am here to help you, you are here to help me, and we are here to help each other.

[@yanzi2960]

I thought neurons stay in your brain for life, or for long enough well past 7 years.

[@mana44567]

+yan zi I had thought the brain and eyes don't regenerate at all (if you damage or lose it, it's gone)? So that confused me a bit when he talked about every cell being replaced by about every 7 years, even though I've heard that fact before...

[@ProductionBandit]

+Humerus Bone Puns eye cells don't replenish and i'm fairly sure that specialised hearing cells work the same way

[@mana44567]

+ProductionBandit Thought so.

[@jkegan6037]

+Humerus Bone Puns In the event of damage (trauma, autoimmune disorders, etc), neurons DO regenerate IF certain conditions are met - and even then it's usually very slowly.

[@nikhilgopal6940]

it's not cells that get replaced, it's what the cells are made of that get replaced, slowly but surely. So after 7 years all the atoms in your body your have right now won't be with you! how they get replaced is a while another chapter.

[@bronzejourney5784]

One of the best Ted talks i have ever unable to see.

[@inspiredme7030]

so far, this the best video of TED-ED I ever watch

[@Sebron3000]

i had a laugh at the end , very beautiful video , i enjoy this stuff

[@NormanMatchem]

Now THIS was a damn good vid...

[@DC9848]

This video deserves 100 x more views, absolutely brilliant!

[@OCsnowboarding]

I love this video and how it highlights that the more we find out the less we realise we know

[@God-oc5gq]

Am i invisible?

[@jesuschrist6611]

God Dad! Stop embarrassing me in front of my friends!

[@shubhammhashelkar6717]

Hihi you both

[@CAT-2323]

GUYS GETT OUTTA THE WAYYYY IT'S THE LORRRDD!!!

[@radishpineapple74]

Error: At 5:14, Lloyd states that, "At the end of 7 years, not one cell in your body remains from what was there 7 years ago." This is not true: most neurons are there permanently and do not replicate.

[@poojasarak1088]

but the parts of neurons gets replaced with time so, technically the neuron is not the same.

[@samanthawong7857]

My favourite TED-ed animation of all times

[@Mr12poopoo12]

We have no purpose, we simply are.

[@TX51]

If that is true then we should just end our existence right now as surely no existence is better by comparison

[@ankurama42]

TX51 But humans are not known for their rationality. I mean suicides are frowned upon but why? Why is it more important to just keeping living rather than to enjoying living? Or maybe people are just too selfish to let others suicide while they have to keep living their worthless lives. By my understanding, humans are the most selfish and controlling species on earth. You want to save the planet? Fuck off.

[@TX51]

ankurama I am with you 100% . . . the existence of life is a highly overrated phenomenon.

[@ankurama42]

TX51 Not sure if that is sarcasm but existence of life is not overrated when it is lived properly, according to me but living just for the sake of it, is.

[@TX51]

it wasn't sarcasm but there is no way to put value on life you can't live it properly or not properly ... you can only live it. saying that "in my opinion the existence of life is a highly overrated phenomenon" (a line form a book but i share it's view.)

[@CT--gs1wj]

He forgot to mention John CEna

[@adarshchaturvedi3498]

haha........................ ///////////////////////////////////

[@CAT-2323]

i ChOkeD

[@jamietaylor5936]

This is one of my favorite TedEducation videos. John Lloyd is as hilarious as he is informative and the animation is perfect. If more teachers were to teach like him, there would be far more intelligent people in this world.

[@FREE_WILL_DEFENDER]

the question his son asked fucks me up evertime, mind blown

[@jenniferhall8128]

It's rare that somebody explains something at an angle that I have not previously been exposed to, I love people that think outside of the box those are the true innovators.

[@SciStarborne]

Videos like this make me wonder why the TED talks are so highly praised. This whole presentation was pseudo-scientific hipster philosophy catch-phrases. Let me sum it all up; "The uncertainty principle; *spooky wooooo noise* Therefore maybe nothing is real!"

[@mionysus5374]

Sounds to me like somebody's pseudo-materialist paradigm was exposed!

[@yashverma14780]

Me: Dad see, I made this coin invisible. Dad: *Lesson starts*

[@AnkushSharma-zv5hv]

one of my best ted talk ever

[@95waga]

One of the best Teds talks of all time!

[@fandju111]

*thats a nice talk*

[@rosiehartshornevevo3407]

I can see atoms. It's true. I must have an amazing eyesight :)

[@lordilluminati5836]

+Diamond Golem everything is made of atoms, by definition if you see something, you see AT LEAST ONE atom.

[@rosiehartshornevevo3407]

+Diamond Golem lol

[@rosiehartshornevevo3407]

watch asdf movies. then you know who I eally am XD (im 10)

[@rosiehartshornevevo3407]

***really wtf

[@pugglez4798]

+RosieHartshorneVEVO I agree you can, you can't make them out but you see them. For example, looking for some1 in a marching band, you can't find them but you see them.

[@pedrosiqueira5235]

I've been watching this videos a lot but this one was by far the best

[@alanmaslowski6926]

"We are here on Earth to help others. What the others are here for, I have no idea."

[@masomirmanic3771]

"whats invisible" Me: air

[@Mr_Glenn]

Wrong. Look at the sky. See the blue? There you go.

[@masomirmanic3771]

Glenn Hartman nah that's rainbows taking over the world XD

[@Mr_Glenn]

Miriya Dekker ow shit...

[@alexanderokak5112]

I would say maybe the purpose of humans are to be a mirror. You don't know you have bottle green eyes until someone tells you. Maybe the universe needs to know about itself so if humans someday manage to get in touch with the universe in some way, we could inform it about the universe actually is.

[@puppytimeallthetime]

A wonderful thought

[@Mement0o]

lol you dont get in touch with the universe we are part of the universe, if the universe had a consciousness it wouldnt need us.

[@alexanderokak5112]

Or maybe we are in some kind of alien empire? To tell the aliens or something.

[@yehuda2189]

Now this guy knows how to speak...not one dull moment, great job!

[@darbuka1]

what a joy and privilage to get the thoughts of such genious people - thanks so much!

[@sloppypoppie]

The answer to the 2 questions is LOVE

[@Mement0o]

Oh please

[@ransom182]

Thanks Bryan Adams.

[@qthequokka]

If the cells replace themselves every seven years, what part of us is preserved?

[@drakgrotta]

i heard the eye has someting that stays all life. but dont worrie you always have youre soul so it dosent mather so much if all changes :)

[@direct.skc.2]

+Qinzhuo Z The genes!

[@__Paprika]

the new cells are (mostly) made with stuff from the previous ones, so even though your cells are replaced, *you are still the same stuff* (except some stuff you get from alimentation like vitamins, amino acids, etc)

[@LordZultair]

+drakgrotta Actually as far as I know, only the neurons making up your cortex remain throughout your lifetime.

[@lev6236]

I'm confused. Can someone plz answer this? I heard that cells of the heart can't repair themselves like other cells in the body, so if they're damaged, they stay damaged unless surgeons use stem cells or whatever. So why did this guys say that at the end of seven years, all the cells in your body are basically different from what they were seven years ago?

[@WhatTheGame]

I come back to this video every once in a while.

[@sajibchowdhury4259]

One of the best TED-Ed videos.

[@Samraa_2000]

نحن هنا لكي نعبد لكي نعمل لكي نصل الى الله... we are here to work , make great thing to our kids and grandkids and to see how wonderful our world is ....

[@Bearyeahh]

yasa Alwaaly I don't think that we're here for that my friend. Materialism is mankinds invention and if there's a god im sure he/she/it didn't put us here on this planet to work and consume. This is a question that never will be answered. Live your life to the fullest :)

[@Samraa_2000]

dear Bearyeahh thanks for the advice... .when you see someones steps .. is that means that he dont exists ? cuz hes not here now? that is how i believe that every thing is for sure made by God and the things man had done so far is because his amazing brain made by God ... so im a human like u and we both need to ask and think about every thing ... i respect any idea cuz thats is your chose , God creates us free and in the Quran Allah said : لكم دينكم ولي دين which means:To you be your religion, and to me my religion... to be more clear" be free" ^^

[@rupertcornholio209]

my earliest memory was peeing in my bed because my dad didnt want to come to my room to escort me to the bathroom because i was afraid of the dark and i didnt want to get out of bed alone out of fear that a cold clammy hand would reach out from under the bed grab my ankle and pull me under with him

[@MrSidney9]

+Rupert Cornholio Was it the memory of a real event or that of a dream and how do you know? I gotta say, it sounds like the latter.

[@HellSpawn83]

This is my new favorite TED-ED

[@ryzeonline]

Such a well done talk, animation, video. Very grateful for this, thank you.

[@XxHENDRIXxX1]

If you've ever done acid you've seen time first hand

[@unpopuIaropinion]

We are here to destroy this planet,and force ourselves to start the space exploration era. Because if we don't get to the point "the planet is dying,we have to leave it" i don't think that anyone will stop destroying,with wars pollution etc. And of cource the point of leaving our planet and explore the universe is (maybe) to save it (the universe) one day (perhaps)

[@unpopuIaropinion]

Daniel W Yes but,by the time it will die naturally,many things might happen in the universe (maybe by some evil alien life form)

[@alley-oopfail8182]

Lord hactivism your one of THOSE people with fake stupid conspiracies

[@realigiousrayne]

You cannot save that which is doomed. Don't worry no one will be around to worry about Earth.

[@nbounce]

The planet has survived worse than us, no amount of pollution will make the planet explode. Earth doesnt need trees, we do. and we wont be missed.

[@ankurama42]

Nathan Whittaker I see who has been watching Carlin's shows. That man was awesome.

[@adityaphatak8590]

It's been more than 2 years since I came across TED Ed but I can't believe I haven't watched this video yet.

[@devanshchoudhary9746]

This video is GOLD.

[@noam_segal]

Sorry for commenting so late but the dude was wrong about some of the matters involving physics, and the carnival ride feels like the animators had some free time and got bored

[@cillyhoney1892]

I can remember being a baby. I remember my diapers changes and sucking formula from a bottle and being held and rocked and being put into my crib. I remember discovering my hands and then my feet.

[@MrPrattoy1]

Cilly Honey You must be kidding.-_-

[@cillyhoney1892]

***** Nope. I really do remember being a baby. I remember being bored out of my fucking mind when I was stuck in the crib for a nap. I didn't need a nap, I needed parental attention! They don't call them baby jails for nothing. I have only met one other person I know who remembers being a baby and he was a certified genius.

[@Aldurnamiyanrandvora]

Cilly Honey haha, well I suppose there must be something wrong to remember that (;

[@paskwawi2007]

Cilly Honey I call BS.. some people bs for shit and giggles.. some for attention..

[@cillyhoney1892]

paskwawi2007 Not me, I am too literal and sincere to be a BS artist. I am a silly person but I don't BS people. 'Sides why would I lie about something like that? I have no motivation to lie. If I wanted attention I would be posting feminist manifestos on the misogynistic channels not telling stories about my babyhood. I think I remember being a baby is because I ruminate a lot and I always have. It's a good way to get your memories deeply etched so you don't forget.

[@HDGuy]

That was beautiful

[@somansajid5922]

I wish I could watch something like this when I was a kid. The animation; it’s amazinggg!

[@hydernoori146]

There has been few errors in this speech. I didn't like the pretentious nature of it.

[@hydernoori146]

Thumbed up never the less.

[@TheEternalVanguard]

+Hyder Noori He was trying more to be funny than educational. Which isn't really what TedEx is about, but still, I enjoyed it.

[@playlist9670]

So many "facts" are wrong here, or at least, misinformed

[@rationalmartian]

+remy pereira I quite agree. Though I'm trying to be benevolent, and put it down largely to artistic licence. And the fact it's meant for a lay audience. But yes, a few things had me wincing.

[@Mrchair-bk5ns]

+remy pereira Please explain them, I would like to know the "misconceptions" and so on.

[@__Paprika]

+Mr. chair well, for example it's totally possible to "see" atoms with atomic force microscope and tunnel-effect microscope. What he said about light wavelength and atoms is not wrong, with visible light you can't see them, but he forgets to mention all the others modern techniques, wich isn't very wise... When he says that we don't know anything about this, that, etc... that's not really true (and probably not very respectful for all the scientists that work and research about gravity, memory, electricity...) all those outdated facts and approximations kinda threw me off

[@anixpix]

+remy pereira i agree with you. this video sounds like someone who is incredibly stupid is being amazed at so many things obvious and understandable, and he thinks it is normal and tries to sound smart explaining his amazement. then people who are like this guy in the video is amazed at him being amazed because these things amaze them too. this video is for the stupid.

[@enorbet2]

+remy pereira It is more a Comedy routine than a Seminar.

[@kojo5928]

We need more videos like these!

[@shoumakyo]

Love the style and script of this video, humorous but informative.

[@nickmagrick7702]

there are people who do understand electricity.... So many things with this video that bother me

[@edwardgyan9749]

But really though? I mean, I know electrical engineers and teachers who know a lot about electricity, and yet they say that theres some sort of 'magic' with electricity...it cannot really be understood... I dunno though, just relaying that piece of information..

[@nickmagrick7702]

@@edwardgyan9749 no, its WELL understood dude. I understand it. Its like a current of waterflow that pushes one electron next to the other, creating a current. We can even measure how fast the electrons move.

[@jport789]

wow harambe

[@AtrozGrima]

Love the way you irradiate so much passion and joy on every single video, thanks to making my life a little bit more tasty you people make me feel like a child again filled with curiosity.

[@Arttojisannn]

Untill today I still listen to this episode.