oh no! I was (ironically!) in the middle of talking to Harrison--he'd just told me about his childhood, which is a weird thing to type in the comments on a game about a puzzle app in a grocery store--and I got:
An unexpected error has occurred
Go back to the previous passage.
Hard restart, clearing all progress and beginning from the start.
If it helps, the console is telling me "Uncaught ReferenceError: hints_discovered is not defined".