How scientists come up with stuff like parrarell universes or string theory...

Working was in quotes because it has not been confirmed via experiment and it is background dependent.

Phenomenology severly lacks behind theory, we won't be able to confirm it for a very long time. So far, strings are the most promising theory.
Known formulations of string theory are not background-independent, sure. But only in aesthetic meaning. The dynamics of string theory absolutely are background-independent and that's what matters.

That's because it is sci-fi.

>The dynamics of string theory absolutely are background-independent and that's what matters.

The classical dynamics are, the quantum dynamics are not.

Holy shit if i wasnt banned from reddit youd be on r/iamverysmart

IASSNS-HEP-93/29
Dynamics of string theory are demonstrably background-independent.

this

The irony of this post is immense.

>computer science jobs
wat

Mostly by following the logical implications of mathematical models that seem to work pretty well at approximating natural process.

The line of thought is similar to this:

Particles sometimes behave like wavesI-> Every particle is a wave -> what is the differential equation to describe waves? -> what are the possible solutions -> can we show that the mathematical solutions are real phenomena under laboratory conditions? -> what if we assume extra dimensions where energy can be stored? -> and so on.

Eventually the thought process might lead to new experiments, which might lead to new insight, which might lead to new understanding.