Welcome to you, jpsharber (I worked with Det. Louis Sharber here some time ago--a fine officer), and also rkerstie of a previous thread, as well as Casey-Canada and BlanchePatch.

I don't think it matters which time, past, present, or future, you're referring to: it's still a theory. Whether it's a prediction or not, I can't say--it depends on what you're positing, I suppose. I don't think you'd call it a prediction, if, for ex., you said you expected to learn that the Allies lost WWII. But if you say you are attempting to verify certain data that shows the Allies won for some specified reason, you could predict that the data would prove your theory. Or am I way off course?

For you, and all other newcomers, my friend:
to make a new post, go to the index page for whatever category you want to make the post in--in this case, Q & A. This is the page that lists all the current threads. At the top right-hand side of the list, you'll
see a few golden icons. Click on the one furthest to the
left, that looks like it has light rays in it, and voilá.