The observed tool-holding patterns indicate that a prolonged learning period is necessary for a chimp to become efficient ...

That not only allows fine manipulation of tools and other objects, but allows humans to make a clenched fist, which apes cannot. A new University of Utah study argues that human hands evolved not ...

And as the human and the chimp in us make a decision on what to do, they refer back to these stored beliefs. Essentially, one system is all about reason and logic (the human system), one is about ...