Black holes. Predicted in the 1700s using Newtonian gravity. The event horizon diameter even turned it to be right (ie. matches the one predicted by general relativity).
Would want the batteries in a belt pack instead of on the headband.
This seems to give him some pretty good trolling opportunities.
Who is that in the picture?
I won't say "better" but Perl 6 is ... interesting. It's not clear what version you're using.
I suggest Haskell as your next language instead of Perl, since it will change how you think. https://learnyouahaskell.com is a good place to start.
It's considered bad form to do what you're asking but most 2fa apps have a backup restore scheme now. Is that enough?
I know someone who did that who is a REALLY GOOD, like pro level singer. Crowd was delighted when she started singing and they heard how great her voice was. Then they were slightly puzzled when some of the words were different. Then they realized she was singing a parody and they were like WTF. I suppose I'll try it anyway if the occasion comes up .
Here she is singing a Queen--Bohemian Rhapsody / Star Wars crossover parody:
Earl Grey, hot, straight from the replicator.
911 attack. I was sleeping on the couch at a friend's place and he was apparently awake gaming online (yes that was already a thing in 2001). He came into the living room and apologized for waking me up but he wanted to turn on the TV because someone on the game server had said there had been an "incident". This was a few minutes before the 2nd WTC plane hit. So it wasn't yet clearly a terrorist attack. Ended up watching the coverage all day.
First there were glassholes. Now we'll have earworms?
Ticking time bomb! Think of the children!!! Law or no law, this will be abused if it can be. Having the law is still a good thing I guess.