Yup. I'm seeing this as well in trying to write Solarpunk fiction that has near zero hand waving of technical and economic challenges. I've had to rethink a bunch of everyday stuff that today relies on substantial heavy industry behind the scenes (like toothpaste).
I get what you mean in general, but toothpaste isn't a great example as it's not a necessity.
My wife goes without it for years and has no cavity or gum issues.
Relearned drawing as an adult. The critical thing I did was daily practice - about 15 min a day. There's something about daily practice, even just a little bit, that makes learning move really fast. I'm getting the same effect with daily DuoLingo.
Okinawa has a 400km ultra marathon that goes around the entire island. It takes about three days. I thought that was crazy, but my coworker recently ran an ultra marathon where they dropped a van load of runners at a mystery location on the Gulf coast and they had to find their way (running) to the finish line two states away. He said it took him ten days. He slept on church grounds and outside post offices.
