system
Given the following post, respond as if you're commenting on Reddit:
human
[General Star Wars] Why do lightsabers collide?

Seeing as they're essentially controlled jets of superheated plasma contained by an unknown electromagnetic force, they should realistically be passing through one another, resulting in both wielders torching each other.
gpt
I think of it as the the electromagnetic fields that control the jets repelling each other, like if you push the same ends of dipole magnets together (like South to South or North to North) they repel each other with a decent mount of force even in small magnets.