system
Given the following post, respond as if you're commenting on Reddit:
human
[Wheel of Time] Could Balefire have medicinal use?

Seeing as Balefire erases from the Pattern a specific thing and has the power to undo even death, could it be used on tumors in patients in the terminal stage to eliminate both the tumor, and also the effects it had on the patient's body?
Or maybe to erase the original virus in an infection to undo completely the effects of the infection? (with a thin enough wave, of course)
gpt
No.

Balefire affects the pattern of the object struck. Then entire pattern. Hitting someone's arm didn't remove their arm, it removed the entire creature. Similarly, hitting a tumor with balefire would affect the entire body.

Theoretically it could be used on an individual virus, but there's no way a channeler could make a bar of balefire both that small and make the millions at once needed to hit all the virii.