CLASSIC QI XL Reaction Hx08 - Hypothetical (John Lloyd, Johnny Vegas, Sandi Toksvig)

[@MagiTailWelkin]

Since you mentioned Discworld. That buttered cat thing sounds like the kind of ridiculous thought experiment the Wizards of Unseen University would attempt in real life.

[@samfisher6606]

The story of Sandi's grandfather's "party eye" is one of her best moments as a guest.

[@davidburke2132]

The bird one… For the birds to be in flight inside the lorry (assuming level flight/hover) then they are exerting a downward force onto the air equal to their weight in order to do so. This force exerts through the air and results as an increase in pressure on the bed of the lorry. Hence the weight is the same overall.

[@mmattson8947]

A scale will have the same reading for a toy helicopter hovering just above the surface as when the toy was resting on the surface.

[@RS-fy9hb]

​@@mmattson8947 in a closed system. In reality, the downwards force is spread a little thinner, because it has room to escape to the sides, so you don't feel all the downwards force that's used to counteract gravity.

[@rickb.4168]

John Lloyd is a comedy god (behind the scenes) amazing list of comedy series under his belt.

[@phueal]

You’re definitely correct, from a Physics perspective, about Sound and Light.

[@mmattson8947]

Like most things QI, there can be a disconnect between physics and common usage. Lloyd has a point (although he could have phrased it better). The definition in the dictionary for "light" requires "stimulating sight", and "sound" explicitly requires a "person's or animal's ear". That definition requires something to be around with ears, otherwise it isn't sound.

[@samhilton4173]

But sound as defined in physics is simply vibration. Movement. Movement is vibration is sound. Regardless of whether somebody or so.ethong hears it.

[@yzolakitchi]

Josh Widdicombe and James Acaster have a show called Hypothetical on Dave channel where all the questions are hypothetical and comedians improvise responses - totally weird show as you'd expect! Bits and bobs are on YTube if you've not seen them. The "How much to hold three eggs in your hand for a year?" with Richard Ayode is hilarious. I guess you could argue the show is like Taskmaster but the challenges aren't puzzles/physical so much as improv and gift of the gab/banter skills being put to the test! Love John Lloyd, for helping bring Blackadder and The Hitchiker's Guide to us all!

[@rhettboy1]

Re: the tree falling in the woods. Sound is a percept. It necessarily requires something there to receive the sound waves emitted by the fallen tree, to be transduced from a sound wave into mechanical energy into neural signals which the brain then interprets. Hearing is the subjective experience of the percept of sound, and the attributes of the percept are determined by the physical properties of the sound wave. It’s the difference between sensation, which creates the percept, and perception, which is the interpretation and subjective experience of the percept.

[@Thisandthat8908]

there is air, there is pressure from the tree falling moving in waves through he air. That is sound. Of course there is a sound when a tree falls except in a vacuum. It's REALLY arrogant to claim fundamental physics only happens when a human is around. Also: Define "nobody" There is no place on Earth with trees without organisms who can detect sound.

[@rhettboy1]

I didn’t claim that fundamental physics only happens when a human is around. I didn’t even specifically mention humans. Sound isn’t only the physical phenomena that occur. It’s also the perceptive aspect. That’s why they call the study of perception “psychophysics”. So yes, without a sense organ (that is, ears) to sense the physical phenomenon, and a brain to meaningfully interpret it, there is no percept of sound. There is just physics.

[@carolmurphy7572]

When in his first year of late French immersion (grade 7), my clever son's class was given their first assignment; prepare a short presentation in French and deliver it in French. He translated Sandy's "Chicken and the Egg" joke. The other students didn't catch on, but the teacher just about collapsed! He knew he was in for a tough year!🤣🤣🤣

[@jasonandreoli4135]

As I see it the birds flying in the truck will push down air with their wings with equal or more pressure than their weight. That pushes down across the floor assuming the walls are sealed and the displaced air can't escape.

[@EgonTheGreat.]

This is why they need a trucker on QI. A poultry truck never have closed walls

[@roesler]

About the siamese cat thing - that's real but not instant. It takes about two weeks to work, because the skin cells responsible for melanin are heat-sensitive, but the fur needs to be replaced. The white hairs won't magically go black when you cool them, but if you cool the cat long enough, the new hairs will grow black. That's also why siamese cats are born all white: the average temperature inside the mother is higher, so no black fur grows. It's only after two weeks that the kitten develops the siamese look.

[@sirgooner6604]

The bird thing is true if its a closed system, its a well known engineering principle students learn in uni. The key that they didn't mention is it has to be a closed system

[@wizzledorff]

They didn't at first, but at one point he said they're sealed inside the lorrie, you can't see them, which would imply that it's a closed system.

[@highpath4776]

The mass of the chickens + lorry would remain, but the weight (gravity) would be offset by the birds opp reaction due to flight . A bird will always have mass, but the weight cannot be measured while in flight as the measuring apparatus will not function to record said weight

[@sirgooner6604]

@@highpath4776 exactly it's like if a space ship was in .2g it doesn't matter if the crew were floating or sitting it would take the same amount of energy to move the ship

[@RS-fy9hb]

​@@highpath4776 wouldn't the lift that the birds create to offset the effect gracity has upon them just be an added force that would continually create a situation where aby weight offset by flapping their wings, would just be counterbalanced by the downwards force they enact on the closed system? I think equilibrium is maintained throughout.

[@DrDaveW]

It's been covered in later series, but basically the question of weight and bowling balls comes down to the fact that weight is not measured in pounds or kilograms. It's measured in Newtons. Your mass (in pounds or kilograms) is constant (unless you eat or do one of Johnny's number twos). Your weight is affected by the force of gravity. Because of the elongated (oblate) shape of the earth, your weight is different at the poles compared to the equator, and even at the top of mountains.

[@mmattson8947]

If we are going that far into the weeds, then the difference in rotational velocity at the equator compared to the poles will also affect the perceived force of gravity.

[@Thisandthat8908]

there's a christmas episode of David Mitchel's unbelievable truth (radio comedy panel show) with Fry, Davies Lloyd and Brydon. very fun. There is also one with Alex Horne where they discuss the longest flight of a chicken. And Alex knows it because he tried to break the record.

[@matte5705]

The bird thing is true only in a closed system, where the air that's being displaced by the flapping can't get out. I could be wrong, but my (hs physics 15 years ago) understanding is it's basically newton's second law, the force propelling the birds up creates an equal force pushing the air down with the same strength, causing the weight to remain the same

[@teresacarosella7624]

I agree with you, Neil. There is a difference between hearing and sound.

[@peterjf7723]

A friend had a Siamese cat, one winter his fur turned dark, actually dark brown rather than black.

[@AL-fl4jk]

Epigenetic expression of melanin

[@YearRoundHibernater]

Since this was filmed they've found the head of Sir Walter Raleigh, weirdly when filming a BBC show called Ghosts, a very good show worth watching, but they found his skull in the attic of the house the show is filmed in

[@simonball5746]

If it's specifically a chicken egg, the answer is still the egg came first. At whatever point in the evolution of a chicken we could say that was the first chicken, it was in an egg laid by something which wasn't a chicken, by definition.

[@haydnlee7492]

I'd love to see Fry on as a guest along with Phil Jupitus and Bill Bailey. Also all hail Pratchett.

[@alpine_newt]

I love a good Discworld reference.

[@Michael75579]

It used to be thought that there was no way to explain left and right if there was no physical object that could be observed in common, but this was shown to be untrue in 1956 when the weak nuclear force was shown to violate parity. You might think that you could use, for example, the direction charged particles bend as they travel through a magnetic field, but without an agreed-upon definition of left and right you can't describe whether the coils generating the field are wound clockwise or anticlockwise and so you don't know where north and south of the field are. Chien-Shiung Wu showed that in the beta decay of cobalt 60 more electrons are always emitted towards the south pole of a magnetic field regardless of how the nuclear spin is aligned with the field.This gives a way to distinguish between north and south, and hence left and right,

[@qwertyTRiG]

John Lloyd also worked with Douglas Adams..

[@shaneord7527]

I think the picture for the bird lorry question was misleading, the idea is that it's a closed system. Like a fly in a travelling inside a car.

[@xfngrs]

He said in the intro to John Levison because this was the hundredth show

[@Dabbleatory]

Fry: What do you know about Sir Walter Raleigh? Neil: They named a city in North Carolina after him Me: And then in turn Rolla, Missouri was named after the North Carolina one, by settlers who didn't spell particularly well...

[@TheClairem75]

Last week they aired the XL version of the T series, episode 3 which was themed on the 100th birthday of the BBC. Would be a great way to start on the T series!

[@robertespley248]

I think my last meal on death row would have to be a FRESHLY prepared Chinese "century egg"

[@ARetiredPirate]

Great episode!

[@jonathanclark762]

I think it's the downward force of the birds flapping the wind has to be the same weight of the bird to lift it up so there is no change in the weight. That's just my guess but I can be completely wrong. I worded it bad but I hope you get what I mean

[@stevehartley7504]

The bird forces air down to force its body up. therefore pressure forces floor down equal to weight of birds body

[@ClaireWW]

If the question is what came first, the chicken or the chicken egg, the answer is the chicken, as by definition the first chicken came from an egg laid by another kind of bird. As non-biologists, though, we would be hard pressed to tell the difference between its parent and a chicken, and the egg that it laid, while it would be a chicken egg, might not have a chicken that grows from it. Biology is complicated.

[@samfisher6606]

Kinder eggs are no longer banned in the US. The ban was lifted in the 2010s.

[@Cobalt-Jester]

The birds in a lorry. Stephen said they were sealed inside, so that lorry is a closed system. It has to weigh the same if they are flying or sitting. Birds do not use magic to fly, they create downforce and that downforce is the same as the weight so the lorry stays the same. But it has to be a closed system. If you were on scales and through a bowling ball in the air the scales would read a lower value. But if you were in sealed room holding a bowling ball and the scales were underneath the room measuring the whole system it wouldn't matter is the ball was in your hands, on the floor, in the air. It would weigh the same. the total mass in the closed system has not changed it's just in a different position. Mythbusters tested it and showed that it makes no difference. It weighs the same. But IT HAS TO BE A CLOSED SYSTEM. I think that's what kinda makes people think it doesn't.

[@PWGregory]

"I Ate'nt Dead."

[@Cobalt-Jester]

About those last words before dying. Do you know the most word used in peoples last words? Its "Fuck". Fun fact. I watched a documentary on swearing either by Susie Dent or Victoria Coren Mitchell. It sounds plausible and it was a factual show so I believe them. lol. ;)

[@Michael75579]

At some point in the evolution of chickens there must have been an egg laid by something that wasn't quite a chicken that had a chicken inside it.

[@alexandernelson3703]

Then the question becomes how do you define a 'chicken egg'? Is it an egg that contains a chicken or an egg laid by something considered a "chicken"? After all chickens lay unfertilized eggs all the time and we still consider those "chicken eggs".

[@morphman86]

Technically, the sound wave does not exist, like we think of it. John was correct in that it is only when the wave enters the ear that it becomes sound. It is only whatever reaches our ears that can be perceived, and only in the form it is perceived. If you stick a cotton stick up your ear, despite the recommendation on the box not to do so, there is a sound despite there being no air to push that sound along outside of the ear drum. If you tap yourself on the head, you will hear a sound that comes from the inside, no "sound wave" have travelled through the air, it used your skull instead. Therefore, the ripples in the particles in the air cannot be considered the sound itself, those are just the medium by which the sound is propagated. The sound itself must therefore be our ear drums moving. You could see it in terms of light, if you wish. Is your shadow the light interference between yourself and the ground, or is it the outline on the ground caused by that interference? Nobody claims the air between you and your shadow is the shadow itself, the shadow is only where it finally rests. This can be further implied by putting a glass pane between you and the ground and seeing that the shape appearing in the glass is not a shadow, but a reflection, meaning the interference travels through the pane and to the ground, where the shadow will appear. If the shadow was the interference itself, both the glass pane and the ground would see an identical outline. Likewise, the sound is not the wave of particles coming from the source to your ear drum, it is that wave hitting your ear drum.

[@daveofyorkshire301]

11:10 of course it's a human centric answer it's about human perception. Light, sound, temperature, orientation, gravity everything is our perception of it, it exists in the way we perceived it. It doesn't mean it is by definition only in existence limited by our perception. Our perception limits it to our limits. Here's a thought, just because we perceived a certain frequency as sound, what about organisms that perceive it visually? What about creatures that can see infrared and ultraviolet, we can't, but it's simply a variation on perception because their organs are attuned to a different frequency... The world around us is perception not fact... What we perceived to be, is our limitation of perception. For example it's pitch black and we see nothing. But see infrared and it's possible to see acceptably. So it's not pitch black... If you can only hear low frequency, does that mean high frequency doesn't exist? Or that you can't perceive it's existence? So if you don't perceive a frequency is it there? Equally if you do perceived a frequency what is it - light, sound, heat any number of things only defined by how we as humans discriminate between frequencies...

[@makaveliuk86]

Yeh I'm with you on the light/sound issue, Jon acting like they don't affect anything else!🤦🏻‍♂️😑 James Acaster and Josh Widdecombe host a comedy show called hypothetical that's well worth a watch....👀👌😂💜

[@tristanthompson5269]

People rather complicate the explanation of the birds in a truck problem. It's a matter of equals and opposites, the upward force of a bird overcoming gravity has to be balanced by an equal downward force. The more complicated answer has to do with the difference in air pressure either side of a wing.

[@ninjabluefyre3815]

Notice: Since this episode, there has been another who can raise their body temperature, one Wim Hof.

[@xfngrs]

Kinder eggs are not banned in the US. I just saw them in Walgreens before Easter.

[@nonautomaton6230]

Those are "Kinder Joy" eggs, not the "Kinder Surprise Eggs" the rest of the world gets - A different product made for the US market.

[@Michael75579]

My understanding is that what's on sale in the US is a variation of what's on sale in Europe. In Europe you have a chocolate egg with a toy inside of it, whereas in the US the egg is empty and the toy is separately packaged.

[@heatherrobertson6110]

I also agree with you about the tree falling in the forest. The question I would ask is if a tree falls but there is nobody there to hear it, but there is a sound recording device which somebody plays back, say, the following day. Does that mean that the tree does make a noise, but not until the day after it has fallen over? Or does the tree not make a noise, but the recording device does make a noise? It is clearly nonsense.

[@morphman86]

Cardinal directions cannot work, because there is no tangible reason for an alien in a distant galaxy for why our North is North. We picked it because conveniently enough, there's a star right above that pivot point of the planet that doesn't move very much and happens to be one of the brightest in the sky, so it is quite easy to identify at night. Since over 80% of the population live in the Northern hemisphere, that was a pretty good standard to have. So North was the one with the bright star, South was the one without it. East became the way we were rotating towards (prograde), while West was the one we rotated away from (retrograde), so these two could possibly be explained. But without knowing which of the poles should be North, how would you use that information to tell them which direction Left is?

[@cemerson]

If a sound isn't the interpretation of changes in air pressure by a living thing / recording device of some sort, at what point is the differentiation between a sound and other kinds of air pressure change? Is wind a sound? A depression or cyclone?

[@js0988]

When the air pressure hits your ears/ a microphone and the vibrations are interpreted as sound in your brain/ microchip. It's the same as a string and 2 cups. Is the vibrations in the string sound? No. The principal is the same, just different medium.

[@cemerson]

@@js0988 I'm making the point that there's no differentiation between them if you take the view that sound exists outside of any listener.

[@rx80]

Where can i give an extra thumbs up for the Discworld reference? :D

[@DrDaveW]

That's weird about the Siamese cat. You'd think it should go white when it's cold. Like the Arctic Fox. Camouflage against snow.

[@helenwood8482]

However you define sound, there is no forest on Earth without ears.

[@shaun-hoppy]

I think if it's an enclosed vehicle the chickens won't displace air so the van shouldn't change weight vehicle

[@PokerJoker811]

More to the point, the air does not displace the birds. It's the same contents before and after, and therefore the same weight. If there wasn't a roof, the weight would indeed be less, because the air is not part of a closed system and therefore replaces the birds in terms of what is touching the floor of the vehicle.

[@Uatu-the-Watcher]

Right is 90°, Left is 270°

[@boghag]

Is that clockwise or counterclockwise? Which direction is the rotation? You will have a hard time defining clockwise without using right and left. The best way to communicate right and left is using the "Right Hand Rule" from Physics for electrical current (electrons) inducing magnetism. This only fails if you're unsure about the recepient using electrons or positrons (anti-electrons).

[@Uatu-the-Watcher]

@@boghag the degree doesn’t need clockwise or counterclockwise. It’s relative to the orientation of the individual. As such, right is always 90° from wherever you’re facing.

[@Souledex]

@@Uatu-the-Watcher it does need base 360 math. If we can't explain North and South thats way harder to explain than our interchangable usage of different bases for math - even that we use base 10 will probably seem dumb for any number of reasons (which it is, dozenal's just better). Left hand rule or the chirality of common molecules makes way more sense. Like the codex they wrote in stargate using element's and mathmatical principles

[@jamesmoore4910]

I don't agree with his point, but I don't think John was implying it has to be a human ear or eye. If a bear is next to the falling tree, then I think he would have argued the same point lol he's just saying the sound or light needs a receptor for it to be classified as so

[@ariadnepyanfar1048]

There’s a quote by a blind person who had their sight….installed (since they’d never had it to be restored.) After much experimentation for months they finally realised “OOOOOOH. You can see how things feel!” I don’t know what’s best practice now, but several years ago there was a pulling back on recommending that the always having been blind be given sight. Too much meaningless, overwhelming visual noise, without much life improvement.

[@Cobalt-Jester]

I hope you read this comment. I think it would be a good idea if you watched "The Making Of QI" documentary (it's knocking about the internet on various video sites if you can't source it then the subreddit is a good place to look/ask). that will answer 99% of your questions about John Llyod and the show. :)

[@Xanderj89]

I get the urge to take off clothes if I have a migraine and am constipated at the same time. The sensation of clothes touching you becomes unbearable on top of the distress you are already experiencing, like how people turn off lights or plug their ears or just scream, your sensory processing just starts wanting things at MAX or MIN when dealing with sensory input not getting filtered

[@unicyclist97]

I aten't dead

[@andriusbruzas9211]

11:55 Weak nuclear force. IIRC some particles only decay in particular chiral configuration. You could say, explain our notations and then say that which particle decays, that is left.

[@Dreju78]

You throw the bowl up, you DON'T weigh less, cause while you just got rid of the weight of the bowl, you also actually pushed yourself down, off that bowl (in pretty much exactly the same amount of Newtons as the bowl weighs).

[@Dreju78]

Also the answer they expected was the truck would not change weight (birds going up by pushing air down on the truck with exactly the same force / weight). But of course that would need a near hermeticaly sealed off truck bed. The truck from the picture, full of holes on the sides would mean a significant amout of air pushed down by the birds would NOT actually push on the truck but on the road right next to the truck, though these holes. So they want 'no change cause a closed system', but of course in reality 'change cause not really a closed system, innit?'

[@donkfail1]

If you rephrase the question to "What came first; the chicken or the chicken egg?", then we have to define what a chicken egg is. Does it make it a chicken egg if what comes out of it is a chicken? Does it have to be laid by a chicken to be a chicken egg? Or must both be true? First case: The chicken egg came first. Second and both: The chicken came first.

[@phueal]

The egg definitely comes first, because the definition is surely down to the DNA. DNA can mutate between generations, and one time a mutated creature was born which we would define as a chicken, to parents which we would not define as chickens. And that first chicken creature came from an egg which contained its DNA, not its parents’.

[@peterjf7723]

I agree with you Neil on the sight and sound thing. Though colour is a product of our vision rather than a property of light.

[@Robalogot]

Neil forced me to make this comment

[@highpath4776]

Was it John Lloyd (or that other John ?) that wanted to know the questions in advance ?

[@friendlyneighbourhoodsteve4087]

I agree with Neil about sound. Ears simply detect sound, and there are other ways of detecting sound. Even a deaf person can detect sound through touch, and of course, we can detect sound with all manner of recording/listening devices. Sound is simply vibrations or waves transmitted through a medium. Regarding the 'closed system' concept. The Mythbusters covered that in one of their episodes many years ago now. I couldn't tell you which episode or season or even how successful their experiment was, but I do recall them doing it. My understanding is that it's not to do with the birds flying per se, it's the fact that it's a closed system and the effect of gravity on said closed system (to keep it simple).

[@shaneord7527]

If the egg is not laid by a chicken is it a chicken egg? You can have eggs laid by chickens without chickens in them, they are still chicken eggs. So I'd still go for the egg on that one.

[@michaelcolbourn6719]

If 5kg is 11lbs I'd say about 12lbs is a good guess 😂

[@Savingforlife]

Liked!

[@NeilTalks]

Thanks!

[@mcpa2991]

I think that even if you define sound as that which can be heard, and light as that which can be seen, you still need to accept that visible electromagnetic radiation exists even when it is not currently being perceived - and the same for audible vibrations. Elsewise a star emits no light until it arrives at a destination where it can be seen.. Effectively light (and sound) could have no speed because they "don't exist" until they are observed. Or perhaps it is late here and I just need sleep...

[@terweeme]

the problem also lies in that measuring said light also can change how it propagated...the double slit experiment...

[@SaintPhoenixx]

I find it bizarre that anyone can argue that the tree doesn't make a noise. We know, from thousands of years of human experience, that it would make a sound. Leave a recording device there, there's no 'person' there. It's one of those hypotheticals that just has a very simple answer. I don't buy into the whole 'redefining what sound is to get a different answer', the answer is painfully obvious that it would make a sound. It's like saying "Sound doesn't exist unless I personally hear it. Gunfire makes no sound because I can't hear any right now." Sound exists outside of your personal bubble. Just as light also exists, just because you can't see something, it doesn't mean it's not visible. John Lloyd got it massively wrong, which is perhaps concerning for the creator of the show. And on the 27 club, Richey Edwards (guitarist from the Manic Street Preachers) was 27 when he disappeared (and is presumed dead). Anton Yelchin was also 27.

[@educatednumpty71]

A tree always makes a noise well it falls, even when no one is around to hear it. It would have to fall in a vacuum for it not to make a noise.

[@morphman86]

The birds in the lorry, you cut off the actual answer there, but I will assume it had to do with them flapping their wings. A bird's upstroke, the flap it uses to take off, creates almost no extra downforce at all, it is just barely enough to counteract the bird's weight. But it is super efficient, as you would expect from a near-weightless being that has spent a few hundred million years evolving this exact feature. However, landing isn't as important, so the downstroke is almost the opposite, extremely inefficient. So inefficient, in fact, that it will effectively double the bird's weight at the point of landing. This means that when the birds take off inside the lorry, the lorry will be lighter, but at the cost of weighing twice the birds' collective weight briefly when they land again, making this method of lightening the load very inefficient and potentially dangerous.

[@xayzer]

Every time I watch this episode, I get quite peeved by John Lloyd's excessively anthropocentric definitions of sound and light.

[@Forestfalcon1]

Your right.. Hearing is a completely different to how sounds are produced.. If a sound is made it is irrelevant if someone hears it.. You can't say something didn't happen because nobody saw it or heard it.. Most things in the world go by unseen or unheard but we often see the results..

[@johnmayhew9769]

John Lloyd is highly intelligent, and generally seems to favour science as the ‘best tool we have’, so it felt a little perverse that he chose to interpret sound and light as subjective sensations - as you say, hearing and sight respectively - when physics clearly dictates otherwise! The birds flying in a lorry question is an old chestnut. It makes a difference whether the storage compartment is sealed - we’ll allow the poor birds plenty of air to breathe! - or not. If it is essentially sealed, it’s a closed system and it’s mass will remain unaltered regardless of what the birds do. If the compartment is open to the air then the mass of the vehicle will vacillate wildly but over all will be very slightly lower with the birds in flight. Alan talking about throwing a bucket of water in the air has some relevance. Of course after the bucket has left his hands he will be lighter by the weight of the bucket and water, but while he’s throwing it, he will momentarily gain mass (force equals mass times acceleration). So as all the birds take off, the mass of the vehicle will minutely increase, but once the birds are in flight, the downward force exerted on the air will be largely but not entirely dissipated.

[@Varksterable]

The whole show is mostly nonsense. They have a whole team of researchers who have no idea of the SR-71. They don't understand fundamental physics principles. They miss world events. The show just goes on. And I'm delighted it does, because despite all its flaws, it's funny and entertaining.

[@LoganAlbright73]

All these physicists and philosophers would do well to study a little bit of linguistics. The argument over “what is the definition of sound” is an unsolvable one, because words don’t have definitions, they have usages. The way a physicist uses a word is different to the way a philosopher does, and neither one of them are wrong because no one is the emperor of language. And because humans are humans, the way we typically use words tends to break down and become inconsistent when pushed to a hypothetical extreme. This is why we have to put up with all these annoying discussions about watermelons actually being berries or cashews not actually being nuts. Because biologists think that the highly specialized jargon they came up with five minutes ago should invalidate a thousand years of English speakers happily communicating.

[@notthere83]

And here we go... Just yesterday, I mentioned Sandi's sexism on a different video. This is the first time I'm seeing her on this channel and what's almost the first thing she says "It's a sort of a boy's thing, isn't it?" - ugh... 😒

[@CommissionerSleer]

John Lloyd was so annoyingly wrong on the physics in this episode. There's so many ways to disprove what he's saying* and yet he's so arrogantly sure he's right. e.g. 1, the universe existed for 13 billion years before humans appeared and every photon and phonon affected our existence (the butterfly effect). e.g. 2, there will be insects and spiders and birds and other animals that hear the tree. Only if a tree fell on mars could it reasonably be argued it didn't make a sound and still it's a useless definition of 'sound' It comes from, frankly, stupid medieval philosophical thinking and a common misunderstanding of the Copenhagen Interpretation of Quantum Mechanics (including Schrodinger's Cat), which thinks that 'an observer' is a person and it isn't: a photographic plate, a molecule, etc are all observers.