It just doesn't add up. To me, it's a convenient story. I can't prove it or disprove it, but I have my doubts.

We obviously can?t prove or disprove, but it?s unlikely. That level of activity would not go unnoticed.

Sexual harassment is as difficult to prove as it is to disprove.

You can't prove any hypothesis, you can only improve or disprove it.

Skeptics question the validity of a particular claim by calling for evidence to prove or disprove it.

Of course, ... this is a hypothesis that we have no way to scientifically prove or disprove. However, we believe it's currently the best explanation.