As an old time computer nerd I have uncountable examples of deprecated knowledge. There is no use in knowing how to use the reserved upper memory in autoexec.bat and config.sys, nor how to use Napster or Kazaa.
But all these skills do shape your brain and way of thinking.
Assembly language taught me to be precise and think before typing. Flash taught me that nothing lasts forever, as big as it might seem.
Eventually, all this adds up and creates a profile that is very demanded in my career.
That said, my mom taught me to thread a needle without looking. And I can’t sew, so that’s that.
It’s pretty cool to see once mastered because it takes less than a second and not many catch what happened.
You take the thread and wrap it around the needle and pull tight. Grab the thread with two fingers and pinch it. Slide the needle out and shove the needle’s eye into the pinched thread. When the thread goes through, grab it and pull it all the way.
The skill comes into play aiming the eye correctly and doing it fast.
It’s probably easier to understand watching a tutorial video.