Nerds for one suffer from greedy hands. Because they want to control with their hands, they end up with greedy ones, ie hands which control things like computers while cannot control more physical things like hammers and screwdrivers. Hands are by their nature greedy things- we expect them to do much while not being controlled by other peoples hands.

Our feet are by their nature the opposite, because we have to walk places to get to a place we want to go.

I may just be talking nonsense though!!!!!!!! lol