Re: So, what does that prove?

Nope. Just a simple fact. As a bonus, pointing it out annoys the more insecure of Clark's detractors.

As with anything, proof of one piece of a body of knowledge does not prove the entire body of work as valid. Nuking the sponge does not prove that the synchrometer works, or that zapping works, or that flukes are among us, or anything else.

The only thing it really shows is that she's not 100% wrong. No one is, but you'd be hard pressed to find a detractor who understands that fact, whether anti-Clark or anti-anything-else, really.