[SBeck]

We take it to be one of the axioms of science, but it can't be proven.

Yet.

[NonZeroSum]

"We take it to be one of the axioms of science, but it can't be proven."

Yet.

Ever. It's unprovable. To prove it, you'd have to verify that it's true for every point in the universe, at all points in time. It's like trying to eat at all the restaurants in the country to find the "best" meal. Some of them go out of business before you can get to them. It will forever remain an axiomatic tenet of science.