Make an invalid assumption, then draw conclusions from it that further take researchers in the wrong direction. How nice.

So, there are differences based on race in levels of amyloid and tau, in Alz patients. Yet the group with lower levels, African-Americans, has a higher rater of Alzheimer's.

https://www.npr.org/sections/health-shots/201...-americans

Now, wouldn't that lead one to believe that maybe those levels are not predictive of Alz after all -- and that maybe something else causes the disease?

But no -- since we go on the assumption that come hell or high water the amyloid/tau theory is correct, well, let's just try to find some way to incorporate this finding into the current, bankrupt, failed amyloid/tau theory.