Premature optimization strikes again. About 6 months ago, I was writing some compression code. That code never got to the point where it was actually functional, not even for a simple use case. I also didn't write tests for it. But, oh boy did I architect it, splitting it into small units, scattering it all over the place. And now I can't follow it. I didn't document it enough. But at the same time what I can see is too rigid for what I want to do. It's probably a waste.