Necessary Thing

[robvalue]

Coming back to logic, a valid logical argument will produce a result that is as true as its premises.

Writing accurate premises that apply to an unknown and unobservable set of objects, acting under unknown conditions, is impossible. (Or at least, it's impossible to know they are correct.)

This is why the reality check comes after making the premises, to see how good the premises were. This is science.

Extrapolating premises from the known to the unknown and just assuming it works the same, is speculation. Any conclusion is suspect.