It is only during the last few centuries that the human species has been able to use its brain to think about its brain and to wonder with its brain just what the upper limits of this amazing organ might be.

We still have no idea of these limits and the more evidence we collect, the more it looks possible that perhaps there are no upper limits!

Here is an astonishing clip about a blind man who has learned to get around as a bat does, sending out noises and perceiving the echoes that return to his ears to discern his environment.

http://www.youtube.com/watch?v=PGMpswJtCdI

“Our deepest fear is not that we are inadequate.  Our deepest fear is that we are powerful beyond measure.”  – – Marianne Williamson