>>And to add to this, it doesn't even make sense from an evolutionary standpoint. You aren't thinking it through. Humans evolved to be long distance runners, n

>>And to add to this, it doesn't even make sense from an evolutionary standpoint. You aren't thinking it through. Humans evolved to be long distance runners, not sprinters. Early hunters were all about patiently chasing prey at a very moderate speed over miles and miles until the prey literally collapsed out of exhaustion. In stark contrast, you have felines such as lions, which are all about short bursts of incredible speed and agility. Their entire bodies are designed for quick acceleration to very high speeds, but if they couldn't catch their prey during that short interval they would be screwed. Edit: your scenario of "a predator attacking a camp of humans" is not realistic. Most predators are afraid of fire, and even fewer would attack groups of other predators (which humans are).