system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek & others] Are there any scientifically plausible situations where 'reversing the polarity' could actually save the day?
gpt
Simple DC electric motors will spin in the opposite direction when you reverse the direction in which current is flowing through them. If your control system uses such motors and the disaster is due to them having spun too far in one direction, just reverse the polarity to set things right.