In my experience, you really should have a closed mind to be an effective scientist

[Bluenorthwest]

53. Because of that attitude, 'medical science' claimed gay people were diseased

until 1973. They did not have evidence, they had assumptions that they called evidence because it served their closed minds.
A wise person asks 'but what if I'm wrong' very often while 'medical science' refused to question their own assumptions even when they were subjecting people to 'cures' for the 'disease' such as lobotomy, shock therapy, chemical castration and other shiny glories of science at it's finest.
And this is the problem. A community that is incapable of saying 'we don't know' and has to affect knowledge where there is none is dangerous and that danger is proven by their actions for generations regarding GLBT people. Too stupid and dogmatic to understand nature. Too self certain to know the difference between evidence and assumption.
1973. What grave errors might that community be committing today? Are they still jailing and institutionalizing people over their own made up theories deemed 'valid science'? We simply won't know until later. But the folks who instantly reject anything that is not approved by 'the scienctific and medical community' would have believed that being gay is a disease, and held that error unquestioned for generations.
Sometimes it works, sometimes it might as well be voo doo, we call it science, but it is really a guessing game until right at the end.