Wikipedia wrote...
Psionics is the study and/or practice of using the mind to induce paranormal phenomena. Examples of this include telepathy, telekinesis, and other workings of the outside world through the psyche. The topic is widely discussed in fiction.
Sounds easy to prove, but it's hard to find proof of it. I've heard of books that detail true stories of people using psionics, some even in a laboratory setting, but I've never been able to track any of them down. (And I cannot recall any of the titles now, to boot.)
I'd love to learn that telekinesis and telepathy was real, but at the same time, I'm kind of scared of such things being real. Imagine the destructive possibilities. What if you had an ex-girlfriend with telekinesis who was really mad at you? (Shitty example, but first one to come to my head.)