More like:

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

Built with his grandfathers axe.

P.S. I'm not implying his grandfather was Gimli even if Gimli theoretically had two grandfathers.

One might say "natural philosophy"

Natural philosophy is what science was called before it was called science.

The philosophy of science is something that has only existed since the practice of science became widespread.