# RealityChuck, you're an ignorant twat. **URL:** \ **Category:** The BBQ Pit\ **Created:** [February 12, 2012, 12:27am UTC](https://boards.straightdope.com/t/realitychuck-youre-an-ignorant-twat/612567 "2012-02-12T00:27:34Z")\ **Posts on this page:** 1\ **Showing post:** 107
**Author:** ![zut](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/zut/32/2875_2.png) [@zut](https://boards.straightdope.com/u/zut)\ **Post date:** [February 16, 2012, 12:57pm UTC](https://boards.straightdope.com/t/realitychuck-youre-an-ignorant-twat/612567/107 "2012-02-16T12:57:03Z")
> [@Baal\_Houtham](#): > > I’m completely unfamiliar with Blake, but I read that link and he came off well. There were half-a-dozen bad thinkers there ("Hey a deer can jump over a 6’ fence, dude!) but Blake just put out the best research available and defended it in non-dogmatic fashion. He certainly didn’t claim that “one meter was the absolute upper limit.” The fact that you claim he did shows that you have no business pitting him for inaccuracy. I’ll give you a hand here: > [@How high could I jump if my legs were as powerful as a house cat's hind legs?](https://boards.straightdope.com/t/how-high-could-i-jump-if-my-legs-were-as-powerful-as-a-house-cats-hind-legs/220421/7): > > There is an upper limit on how far any animal can jump, and it’s about 2 feet IIRC. Later amended to: > [@How high could I jump if my legs were as powerful as a house cat's hind legs?](https://boards.straightdope.com/t/how-high-could-i-jump-if-my-legs-were-as-powerful-as-a-house-cats-hind-legs/220421/39): > > I said 2 feet IIRC in my first post. It turns out I recalled wrong and the standard height all animals can jump to is about 1 metre/3’4”. And specifically: > [@How high could I jump if my legs were as powerful as a house cat's hind legs?](https://boards.straightdope.com/t/how-high-could-i-jump-if-my-legs-were-as-powerful-as-a-house-cats-hind-legs/220421/82): > > There seems to be absolutely no doubt that humans cannot jump higher than 1 metre. It has been studied in some detail. His “best research available” to support that was a series of cites explaining scale effects, specifically why animals whose masses cover 5 orders of magnitude all have similar jumping abilities: e.g. “grasshoppers, cats, people, and horses can all jump about a meter.” The cites were meant to \*explain \*the commonly observed \*scale \*effect, not rigorously set a limit on performance of animals having widely different physiologies. To Blake’s credit, he relaxed his definition of “about a meter” after someone pointed out that vertical leaps by humans of well over a meter have been recorded. But he apparently still thinks that his cites confirm that “no members of a jumping species raise their centers of gravity more than about about one meter when they jump” when they don’t. At all. > [@Baal\_Houtham](#): > > …you have no business pitting him for inaccuracy. Indeed. --- _[View the full topic](https://boards.straightdope.com/t/realitychuck-youre-an-ignorant-twat/612567)._