When you perform the measurement on which slit the particle passes through, then the measuring device is also part of the system and it affects it. The measurement reduces the degrees of freedom in the system so there are no longer two equivalent ways for the particle to pass through the slits (either A or B), but rather you now have a measured slit and an unmeasured slit. Since there are no longer multiple ways to achieve the same result, the is no longer interference due to equivalent probabilities.
Matt Stassler has a nice series of blog posts on this.
Eh, I don't know. Been many years since and thus I don't remember many details, but indeed the first few episodes where not very gripping for me, and the whole show started being very good after I had familiarized myself with the cast first.
I would say that the characters and the dialog are the strong points of the show. If that doesn't click for you, then maybe skip it.
It is in a "typical" Aaron Sorkin fashion, at least from a couple of decades ago as I have not watched modern shows of him like Facebook etc. I did like it. I also liked very much, maybe more, the Studio 60 on the Sunset Strip which had similar style and dialogs, which I would heartily recommend to anyone liking the style.
As an adult I have watched some films, not all of them and not sure which, but I still don't really like it. It's like a zoo show for kids in space. I really don't get the appeal for an adult.
I do plan on playing the Kotor games, maybe that would change my mind a bit.
Why are you calling the children 'shitty'?