> 3.3 million yrs ago crude stone tools were used to break
> open savenged bones.

I don't want to be grumpy here but surely there are no stone tools found
from this time?

> Human hands evolved during this practice

The human hand is of a much older time. It has not changed much since our
line of mammals developed. There are still mammals with almost the same hand
, the lori for instance.
Eva