Here’s the deal with theta: it’s a different kind of knowing than beta. Beta is a crisp, oh-I-just-cogitated-this-thought. But experience in theta is knowing. Theta hits you in a total, murky, deep-but-diffuse way.
If I were going to study psychic shit, my money would be on theta providing access to a buffet of non-local information. Like weird, action-at-a-distance, outside of conventional time and space info. This is a different kind of knowledge, and you can’t approach it like regular, daylight, yes-no questions, because it’s not structured that way.