I believe everyone is psychic, like everyone can sing. Some are natural singers, some are trained, some are wild rare talents, and some are tone deaf. So it is with psychic abilities - some are natural, you can train yourself to be better (as I definitely have) and everyone has wild moments of knowledge.
I met a group of ladies in the dog park, chatting about not much. I turn to a woman I don't know very well at all, and casually ask her if she knows about a local apartment that just sold. I didn't ask anyone else, I don't know why I asked her. Turns out, she's the purchaser. (I actually thought she was joking the first time she said it)
She asked if someone had spoken about it, but I could say in all honesty that no one had mentioned it to me, and that I hadn't discussed it with anyone else. And I laughed to myself. One of those weird wild quirks.