For all its faults, copy-and-paste is still a pretty neat feature.
I just copied a funny picture I saw in my Mastodon feed and pasted it into a Gajim chat, and it worked, just like that.
To someone who'd been using a single-tasking computer like an IBM PC or Commodore 64 or something, moving an object from one app to another unrelated app like that must've been mind-blowing when it first appeared.
Who had it first, by the way? #MacOS via MultiFinder? #Amiga? #Windows?