Philosophically speaking you can never verify anything through experimentation: in a controlled experiment you will use instruments and tools you need to trust (how do you know the microscope isn't lying?) and if you go through the process of trying to see if anything is confirmed, for a long enough time you will end up with the axioms of any scientific field, which are never verified (just assumed true).
You can prove negatives though, so thats something :).
> Philosophically speaking you can never verify anything through experimentation
This depends on what you mean by "verify". You seem to mean "prove that something is absolutely true".
That is not what I meant. I should have clarified that I meant something along the lines of "we've collected a bunch of data that don't contradict <something>".
I've edited my meaning into the post because I don't want my stupid equivocation to distract from more significant issues.
You can prove negatives though, so thats something :).