Title text:
It’s hard to decide which simple machine system to invest in. DeWalt makes a great lever and inclined plane, but I hear Milwaukee’s wheel-and-axles are really good.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3239/


https://en.wikipedia.org/wiki/Simple_machine
I seem to remember wedge was basically an inclined plane, and a screw was an inclined plane wrapped around an axle. Also a pulley is a specific application of wheel and axle.
Aren’t scrwws just a fancy inclined plane?
and aren’t inclined planes just a fancy wedge
Screws convert rotational energy into directional energy
TIL the definition of simple machine.
Screw.
Arrange all six in series for some great slapstick.