Something i find really fun is that every specific field of study has developed its own completely general statistical tools. There's no reason they couldn't be used in other fields. They just aren't.

Geography apparently has Kriging:

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

Economists have LOESS (okay, used beyond economics, i admit it):

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

Maybe geographers refuse to use LOESS because to them, that's a boring rock?

Astronomers have sophisticated deconvolution algorithms that are completely unrelated to the ones microscopists use, etc.