Turing's theory of chemical morphogenesis validated 60 years after his death.
The science was "settled" then, or so they thought.
Related-the UK finally 'pardon's Turing.
Look what the establishment did to this man.
The science was "settled" then as well.
This brilliant man had to be charged criminally for being gay, tormented with chemical experimentation on his physical self in order to extinguish his sex drive and was under surveillance by the government that he had served so bravely and proudly.
The science at that time was to try to turn him into a eunuch chemically. The science at that time to consider homosexuals to be moral deviants that needed to be punished.
Real science is never "settled". Like consensus in a civilized society, it always evolves. Knowledge is a fluid thing. There is always more to learn, more to discover.
Be very wary of the people who tell you something is settled.
It usually tells you much more about them than the actual subject at hand.