What prevents other animals/species from evolving and developing cognitively the same way humans have?

Question

What prevents other animals/species from evolving and developing cognitively the same way humans have?

In: 145

Answer 1

I think that the fact we have evolved to walk upright freeing our hands has a big influence. Being able to walk and carry tools and weapons over long distances without the need for using our hands for transport. We could find a broken branch with a sharp end. Carry it to hunt. Kill our game and return with it to our safe camp. Because our hands were not used to support us we developed better fine motor function so if we discovered a sharp Stone we could take it with us to use to skin an animal and figure out how to use sinew as string to make axes and so it goes on.