I asked him a question about the brain...can't recall what it was that I asked...and he replied that "scientists know more about the surface of the moon than they know about the human brain".His exact words.
So anything that physicians are saying about Alzheimer's is probably just guesswork at this point.
Good post.
Terence McKenna had an excellent comment on this subject many years ago—something to the effect of...
If pre 1800 scientists were studying radios they would take them apart to look for the talking men inside...
:-)