posted on Jan, 29 2009 @ 04:08 AM
Actually, I think you have it kind of backwards.
We do have the ability to use tools.
However, anything from there on becomes learned behaviour.
Even simple things like using a fork and a knife are learned behaviour, and are not built into our being.
Anything that becomes as common as a mouse and keyboard, or a knife and fork become so due to practicality, or social norms.
Mice and keyboards are failry practical, though some people will prefr things like a laser pointer, tablets, trackerball, ect.
Personal preference and what you've been brought up with have a lot to do with it.