While going through the bash scripting course for system admins I saw that it's not possible to unset a readonly variable. I know that in general and for all practical purposes it's true, however, naturally, I immediately set out on a mission to do what can't be done. :).
I ended up on stack exchange and found the following, which actually did work for me to unset a readonly variable. I was hoping that someone could help to break down how this works. This is more of a fun distraction than a serious question. I thought it was worth sharing.