The times displayed on Grand Central’s departure boards are wrong — by a full minute:
This is permanent. It is also purposeful.
The idea is that passengers rushing to catch trains they’re about to miss can actually be dangerous — to themselves, and to each other. So conductors will pull out of the station exactly one minute after their trains’ posted departure times.
You might call this time-hacking; you might call it behavioral engineering; you might call it comical. Regardless, it seems to be working. Grand Central boasts the fewest slips, trips, and falls of any station in the country.
Once heard Carnegie Hall starts their performances eight minutes early [or late] for a similar reason. Curious what other time hacks exist to accommodate New Yorkers.