Chula Vista

It's scientific theory, of which there are many. After Einstein developed his Theory of Relativity the scientific community have taken gravity as fact even though it can't really be proven.

If I tell you that water is wet would you ask me to prove it?

Again, don't be dense just for the sake of maintaining a stupid talking point.

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“The fact that we live at the bottom of a deep gravity well,
on the surface of a gas covered planet going around a nuclear fireball 90 million miles away
and think this to be normal is obviously some indication of how skewed our perspective tends to be.”