system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why every fan I've ever seen has the speed settings in this order "Off, 3, 2, 1". 

Why don't they follow the natural order of "Off(0), 1, 2, 3"?
gpt
It helps keep the motor from burning out.  It takes more energy to get a fan starting to turn compared to keeping it turning.  If you start on low,  the fan can have trouble getting up to speed since it is drawing such little power.

To make the motor last longer, you should always start on high, wait until the speed picks up to where you want it, and then lower the speed setting.