eternal war between "avoid reinventing the wheel" and ahistorical "not invented here"

Did you intend to say something else? Because that's the same thing twice: you reinvent a wheel because the other wheel was 'not invented here', so if you avoid reinventing a wheel, you are suffering from NIH.

It's hard to avoid reinventing the wheel if all you know is what was invented 'here' and 'recently'.