Not to drag this too far off-topic, but human beings are actually quite frail creatures. We are far from being the ones with the most endurance, no matter how you qualify that. Humans are very environment-dependent. In our natural form, we cannot tolerate extremes of climate/temperature, or go for any length of time without air/water/food/sleep, or defend ourselves against predators, or find food, etc. We are absolutely tied to having everything we need being easily accessible. What helps us to overcome this are the tools we've created. We make clothing and shelter to defend against the climate, because human skin and hair are pathetically unmatched for anything except tropical and the mildest of temperate zones. We create containers to take water with us because in some environments we cannot go for more than about a day without it. We create tools to hunt with because humans aren't fast enough to catch anything small and not strong enough to catch the slow things, in general.

The statement that man is the strongest or has the most endurance or anything else is patently ridiculous. We are mediocre in EVERY way. This is a physiological fact. Humans are frail. Our bodies are actually ill-conceived for survival and have only managed to take us this far because we have used intelligence to compensate for all of it. Please don't tell me otherwise: we've made an entertainment spectacle for all of recorded history out of people who can manage to survive with minimal tools. The current vogue involves men equipped with proper clothing and basic tools (knives, machetes, matches, a backpack, a canteen, etc.) having to *gasp* survive for a whole week out in the wilderness. A WHOLE WEEK! How long do you figure Bear Grylls would last if we dropped him out there naked with no tools? I give it two days max.

And let's not hear about survival skills being unused. Family pets, raised in a loving home for their entire lives and never having to think beyond smelling their way to the food bowl that gets filled regularly, manage to survive out on their own for weeks, months, or even years. I'm pretty sure that if you dropped Uncle Rich out into the hills and left him to figure things out on his own we could go retrieve his body in just a few days.