wrote:
A few hundred years ago it was known that nobody could sail the oceans faster than the wind
and birds could only fly because those were lighter than air.

There are some absolutes confirmed to be part of the nature of things.
e.g. law of gravity, electro dynamics, etc.

None of this is absolute. Newton’s law of gravity is basically wrong, as
Einstein showed.

c speed limit is in that category.

Nothing has ever been seen to go faster even in the Hadron and the
like.

Yes, but you are oversimplifying, out of ignorance. See my other follow-up.

[It is the Large-Hadron Collider, NOT "the Hadron".]

Nobody ever thought birds were somehow lighter than air.

They are not.

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PointedEars

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