At Brooklyn's 36th Street subway stop, one of the steps is slightly higher than the others. This causes many many people to trip on their way up the stairs. Filmmaker Dean Peterson set up his camera to capture the stumbles. Concern trolls, get to your logins… (Paper)
UPDATE: And… the stairway is now closed.
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.