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Norah
Norah

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How I sanity-check measurements when reviewing specs

When reviewing specs, I usually trust the logic first and question the numbers second.
Most of the mistakes I’ve seen weren’t obvious errors — they were numbers that looked reasonable but were slightly off in scale.

My usual approach is simple. I pick one value, convert it mentally or quickly, and check whether it fits the surrounding context. If it does, I keep reading. If it doesn’t, I slow down and re-read the section more carefully.

I don’t rely on tools for everything, but sometimes I open a simple page like https://mmtocm.net
to confirm a reference value and then move on. The goal isn’t precision — it’s confidence that I’m reading the document correctly.

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David Fang

good