There is serious argument that we are not.
That we are instead at best reactive to events around us with an arguably weak ability to control our reactions.
They live in the world of "do"...they simply move about doing the next thing without a bit of thought about why they are doing it. Their behavior is almost completely habitual.
Of course, this doesn't apply to us Freepers.;-)
As an aside, I think almost all humans have fine brains...it's just that they don't use them.