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There are four hard things in software development: naming things, caching, and off-by one errors.

That's only two things?

Mmhmm. Now you see why naming things is so hard.

Agreed, I’d much rather deal with cache invalidation than the constant struggle of having to come up with sensible names for things and breaking my flow.

for us that are unaware, what's the joke? Only thing I can imagine is a wizard of oz reference to ruby slippers.

WrtCdEvrydy alluded to it, but the original is:

There are only two hard things in Computer Science: cache invalidation and naming things.

-- Phil Karlton

https://martinfowler.com/bliki/TwoHardThings.html

The joke isn't specific to this project, it's a reference to the semi-famous quote "There are only two hard things in Computer Science: cache invalidation and naming things."

More info: https://www.martinfowler.com/bliki/TwoHardThings.html