The key mechanism that enables 'group think' in academia is access (or lack of access) to funding for research. Generally, funding for research is fairly limite

The key mechanism that enables 'group think' in academia is access (or lack of access) to funding for research. Generally, funding for research is fairly limited relative to the number of interested researchers (ask any grad student). The control over journal publications and conference speaking slots is only useful in that it enables researchers to increase their odds of receiving future funding. If one is able to get funding without those credentials, say by going to industry players with aligned interests, then the 'academic cabals' really don't have the power and influence to be a 'cabal'. It is worth noting, that part of the reason the Alzheimer 'cabal' existed in the first place was because the pharmaceutical industry was willing to go along with it. And part of the reason the 'cabal' is finally falling apart is because the industry is no longer willing to fund the research. Here is a fun question for you (or anyone who is skeptical). Can you name one example where industry and academics were diametrically opposed on a particular topic, and where it turned out that the academics were wrong? I can point out quite a few examples where the opposite was true, but I am struggling to think of a single example that would qualify the above prompt.