I agree that anything else is outside the realm of science, but it can still be real, you know. [Two examples with hidden mechanisms]

Mechanisms can be well hidden; if you deny that there is mechanism, you're just cheating yourself out of the chance to figure out what the mechanism was. When you "commune with the universe", you're actually putting your brain into a meditative state where it queries large volumes of remembered weak evidence that you can't recall by normal means. You can use that state for other things, too (but you'll fool yourself if you don't understand its limitations). When your cousin does card tricks, he's explicitly presenting you with a hard puzzle - figure out just how he's cheating. Answers are in books, but custom forbids giving spoilers. Figure it out, and you can fool others the same way.