The cost of one extra round trip

Every time I revisit a project after six months, I find at least one place where past-me wrote a comment that present-me has now stopped trusting. Comments rot faster than code.

There's a kind of premature optimization that comes from imagining a future team. "What if someone needs to swap this out?" Often, no one does.

Latency budgets work better than latency targets. Targets are aspirational. Budgets force you to delete features when you go over.