The Negativism of Corroboration

I think everything I argue can be put into negatives terms. A corroboration is just a severe test that came out positive after all. The fact that you can then reword those things into negatives terms, if somewhat awkwardly, doesn't mean that corroboration, a corroborating test taught you nothing. Yes, when we verify that happening exists, we also refute the theory that happening doesn't exist. If you want to simply do away with the word corroboration, and you choose towards everything in terms of negatives terms, then sure, you can do this. But it does not seem that it is always so.