for instance,assume there was a thinker (very rare possibility) among the early humans....he would have thought...it's IMPOSSIBLE to walk without the aid of all four limbs....but then over several millenia,a new species was evolved that gradually developed fully opposable thumb which freed the hands from walking and was used to get a firmer grip on weapons.

so evolution can lead to many things....we are still unaware of what lies in store for us.

Going to church no more makes you a Christian than standing in a garage makes you a car. ~ Garrison Keillor