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/
Screws convert rotational energy into directional energy
TIL the definition of simple machine.
Screw.