To be clear, both are fiction, it’s just that one is fantasy and the other is set in modern reality.

Hmmm I don’t believe so? Zen is at least portrayed in its conclusion as a true, autobiographical story (with obviously dollops of philosophical musings).

It is a fictionalised autobiography.

https://en.wikipedia.org/wiki/Zen_and_the_Art_of_Motorcycle_...

I'm sure you meant, both are non-fiction.

> The Hitchhiker's Guide to the Galaxy

Probably one of the few books (the series that is) I could read on repeat and still laugh out loud from.

I agree it's one of the best books out there.