Jo is amazing like that

The fact that she was a psychiatric nurse who became an amazing-and yes, ruthless- deadpan, brilliant, “can’t be bothered to pretend”, delightful comic is just so perfectly fitting somehow, (based on American mental health care, at least,) that I cannot get enough. (My late mother was a shrink, but introverted. She used to make similarly brutal, though never raunchy, one-liners and hilarious smart remarks-but usually muttered them under her breath, so only I heard them. That might be part of my personal fan-hood for Jo, lol, and why I blurt out what I’m thinking, like she does.)

How do u kneoooowww so much about swaloooows

@@apropripinquo I... I don't know that! [yaaaaahhhhhhhh!!!!!]

Zero, before he picks something up to move.

A duck.

How do you know they were unladen? I'm on to you time traveller, I will find you, mark my words!

You and me, both.

I wonder how fast a man can run down a cliff ?

I was thinking of something like a runner who was also a concorde pilot or something

I hate that aimless lazy racism directed at Australia. Let's clear up a few items shall we? 241 years we've been here; TA was, what did he say, 20,000 years ago? How inconvenient for you sloppy racists. Everyone knows he was running from a crocodile anyway....or an Arab slave trader. (Do your research).

@@petercallaghan9851 Arab slave traders in Australia sure. Just another denial tactic, blame things on the Arabs and talk about things that they did out of context to divert from the things that Europeans did.

@@jamiesimms7084 en.wikipedia.org/wiki/History_of_slavery_in_the_Muslim_world#Slavery_in_Sultanates_of_Southeast_Asia

books.google.com.au/books?id=98Sep7MMVs0C&pg=PA69&lpg=PA69&dq=Makassar+slavers&source=bl&ots=2gkD9Mpc7i&sig=ACfU3U1N1YfEaTbJq8vThqhrFCOEdqPkoA&hl=en&sa=X&ved=2ahUKEwjqja3x7cviAhUBeysKHZI6DUMQ6AEwCXoECAkQAQ#v=onepage&q=Makassar%20slavers&f=false

There is growing evidence of slave raiding along Australia's northern/nth western coastline and it's Pacific coast. Just because it is an unpopular, non-pc subject that receives little attention does not make it any less true. The Arab influence via |Islam, is very evident. As I said, do your research. It's not hard, just uncomfortable.

Which is basically how the whole "bigfoots still exist" hoax started.

"someone in thousands of years is going to be BLOWN AWAY by this!" ^_^

In a few thousand years, some guy will find these foot prints fossilised and then believe we ran at like 28mph. Lulw, how stupid would that be.

"rock in the shape of a foot" why, wouldn't his own feet make worthy imprints??????????????????

@@Nemoticon too small

fyukfy - Same. It’s not totally inconceivable! Maybe they were just doing that for fun. They only had so much entertainment back then. I suppose that’s where the depth of the footprint comes in though

@@nothanks9174 I was saying mine as a joke. There's no way they would've been able to hop far enough to make it look like a stride. The depth would actually look similar thought because running is just jumping from one foot to the other

They really can't know. You have to know the stride rate and the stride length to get the speed. Depth doesn't help much and is especially useless in footprints made thousands of years ago.

Strange you should say that as they did discover ancientfoot prints at Lake Mungo NSW that the expert Pintubi trackers who were bought into examine them described as a group of people hunting one of which only had one leg and was hopping. www.visitmungo.com.au/footprint-makers

@@fyukfy2366 No that's not running that's "jogging". If you're jumping while running you're doing it wrong.

Brigitte Thamm there was an Australian lion

Chased by a kangaroo

@@jamesinhenley Haha, it's always nice when a besserwisser gets besserwissed

@@jamesinhenley Ahh what exactly was this Aussie lion you speak of?

@Bobby Banana Well, what's its name. The only one that I could possibly think you all might be confusing it with is the Tassie Tiger, which went extinct almost 100 years ago. Or there's this one "The marsupial lion (Thylacoleo carnifex) is an extinct species of carnivorous marsupial mammal that lived in Australia from the early to the late Pleistocene (1,600,000-46,000 years ago).[1] Despite its name, it is not closely related to the lion, but is a member of the order Diprotodontia, one of the taxonomic groups of Australian marsupials.". What is the species that is alive an well in Syd Zoo?

"Tax time". Wat

wtf is tax time

I think that was the joke... Insinuating he's tight with his money because of the tax evasion so if it was his turn to buy a round he'd run off

@@donaldflump4586 ..or as we, white fellas and Aborigines alike, say here in the Great Southern Land, "Jimmy Carr wouldn't shout if a shark bit him!"

@@TombstoneHeart Is the joke that he'd be content with death for some reason? Like, is there some kind of play on "loan shark" that I'm missing? (Not trying to set up a joke of my own or whatever, just genuinely curious.)

Because both you and Jo don't understand how such measurements are made. No different to working out how big the planet is or how far away the moon is. You're probably skeptical about those 'claims' as well.

psychovolume2 lol "we".

I kind of agree though, how can they know how fast they were from the stride pattens? I’m not saying they are wrong, just want to know how they work it out.

@@Nemoticon Not quite. Two are claims about the present world and one is a claim about the past. You can prove a claim about the present beyond doubt and, indeed, depending on your grasp of physics you could prove those well. The claim about the past is harder to prove and relies on several degrees of lower science (that is, mathematics and then physics are the highest and hardest sciences, anthropology is toward the bottom.) In any case, it's still a pretty stupid claim because they're taking what is possible over what is proven. We know Usain Bolt's running speed. We don't know (and even Fry's explanation makes it clear) how fast this tribesperson really could run. Coming from a scientific background, I'd not be surprised if the researchers deliberately name dropped the Usain Bolt stuff to get better funding.

@@bucwhovian8305 So this is pretty cool, and there's a number of factors in it. But the basic ELI5 is that the faster you run the more the distance is between the steps you take

Didn't even qualify as an eyeroll.

I think you've perfectly summarised this show!

yes! boring and obvious answers are, well, boring and obvious. QI is about things that are, wink wink, quite interesting and not "verifiably right", it's always been like that.

No, Usain Bolt being the fastest human runner of all time isn't an actual verifiable right answer.

@@stackoockats5334 Exactly. People want to feel important by saying that they saw the fastest guy, so Bolt must be the fastest. In any event, being able to run fast is a grossly overvalued 'skill'. It's impressive, but not useful.

@@three-quartersbadger2929 It's quite useful if you can outrun the lion that's chasing you.

Eek - fixed!

Either they've got it wrong or Lolly aged really weirdly

It is possible they were speaking figuratively.

There actually were - marsupial lions.

How do they know his name?

Lol, but from the talk it seems they have the bones and size

If they were jogging it would have left a much deeper footprint.

@chubbyurma No such thing as devolution. There is no positive goal in evolution, its simply what allows an organism to reach reproduction. Thanks to tools and weapons slower humans no longer get killed off and live to reproduce.

I was wondering how tall T8 might have been seeing that usain bolt is 6 foot 4. And they do say human beings have been getting taller and taller due to better diets with more protein. Likely T8 was a short fella by todays standards and was absolutely rapid.

You mean like TikTok?

That's what I was thinking. Some of the footprints might be missing, too. Not everything gets perfectly preserved

I think that's why they were looking at depth and things too, the deeper the imprint would've meant more force and possibly the angle of the print, depth difference from heel to toe, I don't think the people that did the research would've been as lazy to just measure the gap between the prints and call it a day

But can you take ten foot strides slowly? No, such a stride length requires high speed. (This is just an example, no idea what the actual stride length was)

@@alansmithee419 that's easily disproven by looking at very tall people. Shaq could take about 10ft strides and by no means is he super fast.

@@alexandercanella4479 as I said, I gave an example. Unless you find how long the strides found were, you haven't disproven anything.

That would only be true if they found everyone else's bones.

Or that he had really long legs so his strides were super long? (I’m just guessing because I have that short people, short legs issue.)

​@@stepbackandthink Unless everyone else was caught and eaten while he was able to escape.

MrHEC381991 I believe they would compare with the average height of each gender to determine how far they bounded each stride. However, they very well could have had the advantage of longer extremities to aid in running speed

They talk about villages and hundreds of people so am assuming they have bones and homes to match with sizing

Yeah, but then the depth of the print would be bigger.

They're not fossils in that sense anyway. Because, I mean, runners typically do not leave their feet behind as they run. It wouldn't really work, as you could only take two steps before you've run out of feet. So, in this case, these were impressions of feet in the mud, preserved because whatever layer built up on top of that mud - perhaps volcanic ash from a nearby volcano or something? - was of sufficiently different quality that they could discern the difference and restore the mud layer again. Should such a thing be termed "a fossil"? Strictly, probably not, but it's colloquial usage to just call any really old archaeological evidence "fossil" regardless.

True and aboriginals population was 750,000 I'm sure

not with that attitude

Marsupial lions though.

Cassowary; the most dangerous, and very large bird lives in Queensland, where the footprints were found. Give it a look up, their claws have been known to rip out a person's intestines in a single kick.

Tasmanian tigers and possibly other apex predators did exist prior to the colonial ages.

@@tickub "Tasmanian Tigers" - I'm imagining Tigger crossed with Taz... you would definitely have to run fast to escape from that.

Maybe it was "20,000 years ago. On the Gold Coast, they discovered these footprints."

How about one of the guys on the moon walking in the spinning direction while earth and moon are on the right side of the sun …. The question is relative to what ?!

Go and spend a lot of time studying maths, physiology etc. maybe get a Doctorate, and get back to us in a decade or so. :)

'Runner'

Yeah what if he was like 8’5 tall?

Go let the qualified scientists know what you reckon man

@@callumlahey-dillon4302 What is a qualified scientist?

Mitchell Jack Then the footprints would be bigger, the depressions deeper and wider. As for qualified scientists, maybe some certified, and experienced paleoanthropologists.

@@Elephantstonica there are too many variables, there's no way you can tell how fast someone is moving by footprints, you'd need to know how hard or soft the ground was, how long the person's legs were, how heavy the person was and even then I'm sure you wouldn't get an accurate speed.

TRAKARU ALVAREZ every handover has a running start, if that makes sense .

There are 3 20m zones in which the baton must be transferred to the next runner. With good coordination and transfer technique, these zones can be used for flying starts of the second, third and fourth runner. Because of that, when Jamaica broke the World Record in 2012 all runners except the starter (10.10 sec.) ran their legs in under 9.00 seconds which is much faster than Bolt's 100m world record of 9.58 sec.

Because if this show was entirely wrong facts that the majority believe it'd have had 1 fucking season

Unlikely but also they won't have been measured

Yeah, I can run with huge strides - it's pretty inefficient and probably slower than if I just sprint normally. Look at how long their "strides" are in the Triple Jump - maybe this tribe just happened to have their own version of the Olympics?

It's not only the stride length, it's also the imprint depth which allows to calculate the force with which the foot striked against the ground. Together, (with reasonable assumptions of weight and height) allows to calculate the power (force over time) he generated to move himself forward, which thus allows to calculate the acceleration and speed. They did the same thing with T rez and other predatory dinosaurs. It's quite complicated math. Here is the link to a paper. peerj.com/articles/3420/

@@nicolaikarcher2457 you know that article uses bones, limbs etc as a way of calculating the speed of T-rex, not footprints.

u can estimate (with a little margin of error obv) a persons height based on their walking stride. If he had that stride length while walking he would be impossibly tall

@@nicolaikarcher2457 "with REASONABLE ASSUMPTIONS about height and weight" is where you fucked up. That's nothing but opinion

The footprints were laid on a wet clay or mud surface, which hardened, then sand, rocks and subsequent layers of clay embedded on top of the prints and formed a separate layer, leaving the footprints perfectly preserved

@@Alex-hj But if you believe that then you think dinosaurs were real.

Yes, we can and do know. It's demonstrable and repeatable, like all good science.

Just because you couldn't figure it out doesn't mean hundreds of years of modern science can't. All the ???? in the world won't change that.

@Shawn Spence but being the fastest over 100m doesn't mean he's the fastest over 80m. Nice try tho

By the scientific method, depth and stride length.

2.4 meters. And that was the AVERAGE over the whole 100 meters. Try it. That's 7.8 feet. To do that, you'd have to be going REALLY fast, which defeats your argument. This claim is BS, but that's not why. It seems someone pulled this claim out of thin air, cus there's no evidence anywhere for it. Nobody ever actually made the claim, so I dunno where the QI "researchers" got it from. They seem to have found a single incorrect quote, and failed to check it.

Frozen and thawed? On the Gold Coast?

Dead Doll Yes. There used to be these things called ‘Ice Ages’... maybe you’ve heard of them?

@@vaguemartin Sorry to bring up an old response, but these footprints are 20,000 years old, which places them in the last glaciation period. If it were frozen, they couldn't have been made in the first place. At the height of this glaciation, only the Australian Alps, much further south, were glaciated. The Gold Coast remained tropical throughout this timeframe.

Alasdair Scott Well... you can prove anything with facts, can’t you? I’m no footprint or ice age expert but I beg of everyone not to take at face value everything they read in textbooks. History is being reassessed constantly.

@@vaguemartin I absolutely agree it is important to question information, but still too it is important not to dismiss it because it seems incredulous.

Mathew Hale Will you see yourself out or should we see yourself for you :) Good one mate :)