And a fourth time when the scientific community says “this is our hard earned conclusion” and the public says “I don’t trust this.”
Whatever it is, know that science as a whole is giant, diverse, and self correcting over the long term.
When you have lots of people whose livelihoods depend on the gravy train, who can't be sure that what they are working on is fraudulent because they are so specialised, who would take that risk?
Its all about funding. And in the US basically all funding comes from the same source - government, military or corporations - what I think of as the governance system.