@Hannsfeld Looking right at it does not mean observation, because you still can't tell which photon went through which slit. If you can tell it, that would make the wave function collapse.
I guess what makes it a really good drum solo is not the technique, but this guy is a pretty good entertainer, and most of the drummers have a lack of humor when they start playing. Let's be honest, most drum solos are really annoying if you are not a drummer. This one is good. :)
@Hannsfeld Looking right at it does not mean observation, because you still can't tell which photon went through which slit. If you can tell it, that would make the wave function collapse.