I can’t even keep apart ls and cd it seems.

Kinetic energy is exactly what’s harvested, which is why modern wind turbines are not far off the theoretical limit of the amount of energy that can be extracted. (Betz’s law)

By taking energy from wind, you slow it down. Slow it down too much, and it can’t get out of the way in time for new air.

ls … enter ↑ enter ↑ enter