[digestivetires]

1800 is somewhat recent history (compared to year 1799 or -1).

It is interesting that stuff like this gets forgotten in such short time frame and requires investigation/ discovery.

It’s interesting to wonder, what common facts of today, will become mysteries for future historians.

[mncharity]

Could history education usefully emphasize a theme of time-traveler surprise? - "You've traveled back in time, and find... wtf that's weird!"