[OkayPhysicist]

BART's (the Bay's commuter rail) problem is that post-covid there aren't enough normal people to dilute the deranged ones. I've got a couple friends in SF, so I'll occasionally ride BART into the city for a night out on the town. Problem 1. is that the hours on BART don't really allow for that. Last call is 2 hours after the last train, so either I'm calling it short or crashing on a couch. This heightens number 2: There's not a lot of people using BART like that, so when I'm riding maybe 1 in 5 of my fellow passengers are noticeably up to something strange, whether it be actively smoking bud cannabis on the train (I'm no prude, smoking on the platform or using a pen or something I would find odd but not in a "I can't trust this person because they're clearly willingly to completely ignore the social contract" sort of way), leaving all their clothes save a baseball cap and a hypodermic needle tucked behind their ear on the platform, vandalizing the train car with a sharpie (including scribbling over the cameras, which was my cue to find a different car), or merely reeking due to not having bathed in far too long.

If it was closer to 1 in 100 people on the train displaying unusual behavior, it'd be a far less unnerving experience.