If you are thrown with your neighbor into the wilderness with a backpack and a knife, you have to function in order to survive. It is now up to you to what extent you acquire techniques so that this covers YOUR probabilities in YOUR usual life context or not.
Example: If a lion attacks you, you don't have to be the fastest runner in the world to escape it, you just have to be faster than your neighbor.
That is called Darwinism. 😁