It’s ironic that you brought Alzheimer’s as an example since it exactly proves your point - drug companies pushed a therapy that targets a highly questionable _symptom_ of the disease, even though every single step of the process gave negative or inconclusive results. It was all about ego and desperate attempts to make profits using iffy drug candidates.

And “biology is complex” is the type of truism I hinted at. You can always say that whenever you fail. Biology is complex and Alzheimer’s is the most complex of them all, to be sure, but I hope you’re aware of the. Alzheimer’s cabal allegations that the entire field was mutilated by a bunch of people into believing and pursuing the wrong hypotheses for decades.