Remember... he's a physicist theorist... that means all that he had and will ever say is theory, not concrete evidence. Once you understand what theory is... you'll understand better. I assume you believe in ET and big foot too... what's to say that these aren't evolution in progress? And if you don't believe in these... you've just shot yourself in the foot.
LOL

Big Foot did exists (gigantopethicu
s). The question is, did they survive into this era. Most likely not. However, God is a lot like big foot; but you guys don't seem to complain. As for aliens, well, it is a mathematical certainty that we are not alone.