The best technologies are *physics hacks*.

Refrigeration works by compressing air to temporarily make it hot and reverse a temperature gradient. Airplanes trick the air below a wing into pushing the wing up by shaping airflow to reduce the pressure on top.

So much of what we call "tech" these days is just "follow a list of instructions, millions of times per second". I'm not impressed, Silicon Valley. ;)

What are some of your all's favorite physics-hack techs?