Are the "Science of Discworld" books worth getting?

These two Pratchett books don’t actually seem to be in print in the US, so I’d have to import them from the UK. Before I go through the effort and expense, I’d like to know whether it’s worth it. The descriptions just sound weird, like a Discworld novella mixed with non-fiction science or something??

Personal opinions, anyone?

Clearly they are at the very least unpopular.

yes, get them

I have the “science of” book and it is based around the wizzards creating a miniature discworld, and having to understand the science that governs it - which is earth science.

I have to be honest and say that I never finished it and I am a big discworld fan.