I learned on Lost in Space (the TV show, not the movie) that you don’t need toilets in space. Seriously, just try to figure out where they would’ve put them.
Psst. That’s why they landed on planets all the time.
And that even if you possess several degrees, & are smart enough to build almost anything, you can’t figure out how to patch a hole in the side of a wooden boat.
Actually, they did patch the boat. But the glue was water-soluble so it didn’t hold, the boards flew off and the boat sank.
I learned from Gilligan’s Island that the Japanese from the WWII era squinted, wore really think glasses and had buck teeth.
I learnt from time tunnel that no matter what clothing you’re wearing when you enter a timp warp, you’ll always arrive at your destination in your street clothes.
I learned from the various Terminator projects that nuh uh!