Off topic, but I am very interested in the topic of what other inventions are universal (I've thought about this myself a bit). Do you have a list or writeup?
I've not maintained a list over the years. But some that I can name off the top of my head are:
Wheel
Battery
Electric motor
Glass
LED
Laser
Book
Lens
Ballpoint pen
Mirror
My dad claims to have “invented” the brushless electric motor as a physics student, only to discover it had been invented many dozens of times already.
