A workshop by Kevin Ruth
Small tools with strong opinions about product work.
Cold Work is a workshop. Each tool asserts a claim about how the work should be done, and each ships with the written argument behind it. Writing and software by Kevin Ruth.
01 / The Workshop
Tools that assert an argument.
The writing explains the opinions; the tools enforce them. Each one hardens a piece of soft product judgment into something you can check.
Stop lying about deadlines.
Monte Carlo cycle forecasting for product teams. Ranges in, honest dates out, and a record of whether they held.
If you didn't write down a number, you don't get credit for being right.
A calibration tracker for your own judgment calls. Plain text, local-first. I'm dogfooding it now.
Your language drifted and nobody decided that.
Strategy language as a canon with a changelog. An agent flags drift while you draft, and every change is a dated decision. Template public; mine runs privately.
02 / Temper Line
The writing behind the tools.
A series about the boundary between what organizations know and what they think they know. The temper line on a blade is where hard steel meets soft steel: a boundary you design on purpose.
Tools With Opinions
I published three essays as an experiment, then went quiet for two months. The thesis kept going without me and came back as software.
“The gap between intent and practice isn't a problem to solve. It's the temper line, permanent terrain you develop craft around.”
— GREAT PMs DON'T AGONIZE
Great PMs Don't Agonize
There's a permanent gap between what's documented and what's real. Great builders stop trying to close it and start working inside it.
Reset to Zero
Every decision up the chain was rational. The information between them wasn't. What it costs an organization to perform certainty it doesn't have.
Stay Close Enough to Stop
Sometimes the discipline of staying close to the work tells you what to build. Sometimes it tells you to stop.
03 / About
Shaping ambiguity without heat.
I've spent 15 years in product: mechanical engineer, first PM at a startup, now employee #2 at a seed-stage govtech company where everything is ambiguous all the time. Cold Work is where I think out loud about the gap between what organizations know and what they think they know.
The name comes from metalworking: cold working is shaping metal without external heat. No spectacle. The material's own resistance to change is what makes it stronger. That's the best product work: the slow, deliberate transformation of ambiguity into something useful. Cold working has a limit, though. Keep hitting the same spot and the metal goes brittle and splits, and I've done that to a roadmap more than once.
If you have an interesting product problem, say hi: hello@coldwork.co.
