[explaininjs]

Is there something to be said for practicing how you play? If your real world builds are going to be on VPS’s with noisy neighbors (or indeed local machines with noisy users), I’d prefer a system that was built to optimize for that to one that works fantastically when there is 0 contention but falls on its face otherwise.

[the8472]

Different things for different purposes. Measuring how real software under real production workloads in variable enviornments behaves is useful but inherently high-variance. It doesn't let you track <1% changes commit-by-commit.

Field work vs. lab work.