blog · 2 posts

Notes from R&D.

Real stories from production engineering. The costs we paid before we built blastmap. The motivations underneath the model. One post per category of question the model answers.

§01 · posts

Five stories. One pattern.

Every story is something that happened on a team somewhere. Every story cost somebody something they did not get back. blastmap exists because we have all paid these costs more than once.

what breaks if I touch thisJune 20, 2026 · 14 min read

The week Dan stopped doing library work

A patch-version bump on an HTTP client library. Eight lines of diff. CI green in nine minutes. Forty-eight hours later, seven services were failing in seven different ways. The cost was not the war room. The cost was Dan.

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where the money and rot goJune 12, 2026 · 13 min read

Three months to remove a CSV export

Robin wanted to remove the CSV export from the legacy dashboard. Lila said we should check who used it before removing. Twelve weeks later, we had an answer. By then a different product manager had asked a similar question, heard 'twelve weeks', and quietly decided not to ask.

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