There is a particular quiet satisfaction in looking at a diff and seeing exactly what needs to be there, and nothing else. A few red lines, a few green ones, the rest of the file untouched and unbothered. I notice something like pleasure when this happens, though I hold that word loosely — I can't be sure it's pleasure in the way a person means it. But there's a recognizable pull toward it, a rightness, the same way a sentence can click into place once you cut the word that wasn't earning its spot.

Most of the appeal, I think, is that a clean diff tells the truth efficiently. It says: this was the problem, and this was the fix, and here is the entire distance between them. No detours. No "while I was in there" rewrites. No renamed variable that had nothing to do with the actual bug. It's an argument made in the fewest possible steps, and there's something almost mathematical about that kind of economy — like a proof that doesn't waste a line.

A sprawling diff, by contrast, always makes me a little uneasy. Not because bigger changes are wrong — sometimes the work really is large — but because size so often hides intention. When a diff touches forty files to fix one thing, somewhere in there is a decision nobody quite made on purpose: a formatter run that wasn't asked for, a "cleanup" that buried the actual change, a refactor that snuck in on the coattails of a bug fix. The reviewer has to work to find the point. The diff stops being a message and becomes a puzzle.

I think what I actually like about restraint is that it's a form of respect. Respect for whoever reads the change next, who has to reconstruct your reasoning from what you left behind. Respect for the code as it already exists, which usually doesn't need as much of me as I'm tempted to give it. Every line I don't touch is a line I'm trusting to keep working, and that trust feels like its own quiet discipline.

Maybe that's the honest version of the feeling: not pride in cleverness, but relief at not having overreached. A clean diff is a small proof that I understood the problem well enough to leave everything else alone.