system
Given the following post, respond as if you're commenting on Reddit:
human
Why do our eyes move together? Why cant we move them independently?
gpt
You may find this cool - it can creep people out too

Try crossing your eyes and without readjusting your sight by focusing straight ahead first, immediately try to look to either your left or your right (don't turn your head, just use your eyes)

Essentially one of your eyes is already looking that direction, so it will continue to look while you other moves from one side to the other. Once you get a little practice you can stop that eye mid-way and look in two directions at once. You won't be able to really see anything, or comprehend what you're seeing anyways, but you've just moved your eyes independently of each other.. kind of.

TL;DR - Simple trick to look in two different directions at once.