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They might call them facts, but if no one knows whether they are true or not, then they aren't facts. They are opinions. In the opinion of one scientist, neutrinos have mass. In the opinion of another, they don't. Once it is proven one way or another, then the mass of neutrinos will be as much of a fact as the mass of a baseball. I'm pretty sure that everyone would agree that baseballs have mass.Except perhaps on an internet forum.Just a little joke, that last sentence. no need to take it seriously.
They might call them facts, but if no one knows whether they are true or not, then they aren't facts. They are opinions. In the opinion of one scientist, neutrinos have mass. In the opinion of another, they don't.
Once it is proven one way or another, then the mass of neutrinos will be as much of a fact as the mass of a baseball. I'm pretty sure that everyone would agree that baseballs have mass.
Except perhaps on an internet forum.
Just a little joke, that last sentence. no need to take it seriously.