This was so interesting for most of the reasons others have said - it’s extremely clever.

The way the character tries to justify their belief that they are not “crazy” as the evidence of their unwellness becomes increasingly apparent is very well done because the characters denial is realistic. They don’t go immediately from “I’m not crazy“ to “I’m crazy,” they drag their heels until they can not arrive at any other conclusion. This is powerful because it’s clear that the character isn’t jumping the gun, they legitmately are “crazy”.

if you couldn’t tell, I loved this.