Nine and Three-Quarters

An eleven-year-old in Harry Potter robes ran through Pennsylvania Station asking strangers and transit workers where he could find Platform 9¾. That’s the whole premise. It shouldn’t work as well as it does.

What Improv Everywhere captured—and what makes this the kind of thing I end up watching twice—is the moment adults decide to play along. Commuters with nowhere to be, conductors who’ve heard everything, a station that smells like burnt pretzels and diesel: all of them, given one hopeful question from a kid in a lightning-bolt scar, briefly become better versions of themselves. Someone points at a wall with complete conviction. Someone breaks into a full explanation of the barrier. One woman looks genuinely distressed on his behalf.

You know exactly how your day is going before you watch it. You know it won’t fix anything. You watch it anyway, and for about three minutes the city seems like it might actually contain magic—which is obviously ridiculous and also true.