Back in June we spotted a video that had us flummoxed: a few round-looking shapes appear as squares in a mirror. Rotating them 180 degrees produced the opposite result. Was it wizardry? CGI? Almost a month later, we finally have our answer.
A few weeks back, you might have seen a video floating around of what appeared to be Viner Kevin Parry playing catch with his own reflection. It's hard to look away from, but it's obviously impossible. That led commenters to speculate on how the trick was done.