The gist of it is: if a computer can tell you it is experiencing only one of a superposition of states – but doesn’t reveal which one – then we know there has been a splitting of the universe into two presently identical parallel universes.
If it can’t tell you and can only experience both until you look, then the old familiar collapse of the probability function prevails. Cat is both alive and dead smeared between two states.
In fact, it can tell us it feels at “one”.
As I get towards the end of my book on quantum computers, I am concerned at the lack of discussion on their usefulness other than in running some useless algorithm. And I am running out of pages for the discussion to blossom.
Yes, I a sure you will find this amusing.