Just out of curiosity, how many people posting on these science topics have experience working in the real world of science, with scientists? It’s hard to convey intent in an internet posting, but I seriously don’t ask that in any put-down way, I’m genuinely interested in the level of experience here.
What I see quite often is that people forget that scientists are just people who took certain topics in school and work in places where you can do science and get paid for it. But the bottom line is that they are just people. No better, no worse. There is a distribution of personalities, levels of integrity, agendas, etc. that are no different from people in other fields, such as accountants, business managers, CEOs, cops, religious workers, software suits, athletes, etc. Think about the range of people you know and work with - same thing. Being people, my experience is that most scientists that I’ve seen, worked with, etc. over the last 30 years are NOT driven by a pure quest for knowledge. They are driven by the same motivations that everyone else is: how to get promoted, how to make more money, professional ego, fame, a fun place to work, good people to work with, etc.
So, when someone working at a university becomes a professor specializing in nuclear chemistry, global warming, evolution, tribology, catalysis, fuel cells, etc. the perhaps unfortunate reality is that they have vested interests in the results of their research. I have very rarely seen a professor who published papers and earned his/her salary (which means getting public and government grants) in a given field come out and say “Hey, you know I have been saying for years that this is true? Well, we just discovered that I was wrong all these years, and the people arguing with me were right.” Because, even if that is the truth, that means they lose face, lose prestige, and lose grants and money. You can argue that it is better for them to say it than have it proved by others, but that’s just the way it is for the most part.
Scientists do what they do to make a living. Not because they are pure driven nobles in white robes. Some (fortunately a minority) lie and distort the truth because it helps them make more money in some way. I’ve had to fire more than one scientist for precisely that reason. I used to think that that couldn’t happen, because in one way or another the data would find them out, but you’d be surprised how often data is open enough to interpretation to keep it from being so open and shut. So whenever I take over a new lab or R&D organization, one of the first things I tell people is that I only have 3 unforgiveable sins for which I have zero tolerance, and one of them is lying about the data - then I go on to define lying about the data as any form of misleading people about the data in any way.
I guess my bottom line is that most scientists are good honest people but only in the same way and the same proportion that all people in all areas are good honest people. The ideal that scientists are pure in some way and driven only by a seek for the truth as opposed to making a living and paying their mortgage and buying a new car is just a bit naive.