The Physics of Star Trek

I'm curious how Lawrence Krauss approached blending scientific accuracy with the imaginative world of Star Trek. Did he have to simplify or reinterpret some concepts for fans?

The science sounds plausible but also stretches the limits of current understanding. How did the author balance scientific possibility with sci-fi fun?

I wonder whether Krauss leans more on established science or if he explores more speculative concepts that might not yet be testable.