Induction.
Hypotheses and theories are proven to be true.
Scientifically speaking, theories do not become facts. Facts are things that are observed to be true; theories are created to explain why a particular set of facts are true.
true
Erwin thought it was a wave, and Einstein thought it was a molecule
It is true.
they thought the universe revolved around the world and thought other theories impossible
If they are known not to be true then they are no longer postulates but discarded theories.
death
they can change over time
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Yes.
no i dont think that that is true. never really thought that they looked like chicken. I thought they no i dont think that that is true. never really thought that they looked like chicken. I thought they no i dont think that that is true. never really thought that they looked like chicken. I thought they looked like brocolii no i dont think that that is true. never really thought that they looked like chicken. I thought they looked like brocolii