So .. the next time someone tells you "I believe in "undefined" realize that responding back " I don't believe in undefined" is equally nonsensical.
I don't agree. If someone claims to believe in something that isn't defined sufficiently for me to understand it then I can confidently say that I don't believe in this something that hasn't been properly defined.
Nope .. you can not "Confidently" say you believe in anything .. True / False or otherwise.. on the basis of an undefined premise. The idea that one can have any confidence in anything on the basis of "undefined premise" is the self delusion I have been speaking of .. a belief based on fallacious foundation.
What is it that you do not believe in QM ? is it nothing = undefined .. or Something = God defined?