Well, even that is sort of a general agreement.

Yes, water is a liquid and therefore wet.

But would you say that liquid iron is wet? It would be boiling hot and kill/harm you to touch it, but strictly speaking, it would have to be wet.

Would you call liquid oxygen wet?


My point is, with ultra complex things, after a while, you need to go beyond 'proof' and agree that it probably is truth, and come up with a general agreement.

As any general agreement, it can be altered or disproven, but as long as it's not, in a scientific way, it's truth (for as closely as we can approach it).

Maybe a dumb way of putting it, but I hope you see what I mean.