"The Overton window is a political concept that describes how the public's opinion on a subject can be changed. It states that ideas that were previously considered preposterous can become accepted in the long run...In the first stage, cannibalism isin the lowest acceptance level in the Overton window. Society considers it immoral. It's considered disgusting and preposterous. At this point, the window is closed and unmoving. To begin changing public opinion, scientists start studying it. For
"Speed of light relative to the observer and independent of the speed of the observer" was preposterous nonsense initially. Einstein wrestled with his conscience "over a lengthy period of time, to the point of despair" before positing it:lengthy period of time, to the point of despair." https://history.aip.org/exhibits/einstein/essay-einstein-relativity.htm
"But this seems to be nonsense. How can it happen that the speed of light relative to an observer cannot be increased or decreased if that observer moves towards or away from a light beam? Einstein states that he wrestled with this problem over a
Poincaré also suffered, went through much confusion, but in the end succumbed to his conscience and did not accept the nonsense:is possible. As a gedanken experiment (if we neglect practicalities such as the technology needed for reaching velocities comparable to the velocity of light, the cost of the fuel and the capacity of the traveller to sustain high accelerations), it
"From his [Poincaré's] point of view, the true velocity of light in a moving frame was not a constant but was given by the Galilean law of addition of velocities." https://www.jstor.org/stable/10.1086/430652
Nowadays "speed of light relative to the observer and independent of the speed of the observer" is a universally accepted truth. Anyone who opposes it automatically becomes crackpot, crank, troll etc.
The paradigm of the Einsteinian upheaval of human rationality is the twin paradox idiocy. Any pre-Einstein scientist would find the claims in the following text preposterous, idiotic, etc:
Thibault Damour, Einstein's apostle in France: "The paradigm of the special relativistic upheaval of the usual concept of time is the twin paradox. Let us emphasize that this striking example of time dilation proves that time travel (towards the future)
Nowadays the claim that "a sentient being can jump, within a minute (of his experienced time) arbitrarily far in the future, say sixty million years ahead" is universally acceptable.
Pentcho Valev https://twitter.com/pentcho_valev
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