So, there are these industries--long established industries--that have supported the world as we knew it. But what we know about the world has changed. Everyone ate butter, lots of delicious butter, until it was realized that all that cholesterol was actually really bad for our health, that it contributed to causes of early death. Even doctors recommended smoking cigarettes, until understanding that smoking is really bad for us, and that smart people wouldn't smoke. Yes, that upset the... Sign in to see full entry.