Eli Lilly's Brave Alzheimer's Talk

I'm a bit baffled by Eli Lilly's strategy on Alzheimer's. Not the scientific side of it - they're going strongly after the amyloid hypothesis, with secretase inhibitors and antibody therapies, and if I were committed to the amyloid hypothesis, that's probably what I'd be doing, too. It is, after all, the strongest idea out there for the underlying mechanism of the disease. (But is it strong...