The class logbook

The Latest

Everything published on the site, day by day, newest first: guides, analysis, essays and quick thoughts in one running log. The shelves for browsing are elsewhere; this is where you see what is new.

The log

Entries 1–5 of 5

Mon, Aug 17, 2026Monday, August 17, 20261 entry

NoteAI at Work

Teach Claude the Difference Between Blank and Zero

A blank sales figure can mean “not reported yet.” Zero can mean “reported, with no sales.” Combining them makes a complete-looking report less truthful.Quick thoughtclaude-codedata-quality

Sun, Aug 16, 2026Sunday, August 16, 20261 entry

NoteAI at Work

Measure the Cost of an Accepted Result

The cheapest Claude Code session can be the expensive one if its output takes another hour to repair. Compare accepted results, not just token totals.Quick thoughtclaude-codecost

Fri, Aug 7, 2026Friday, August 7, 20261 entry

NoteAI at Work

Make Claude Preserve the Meaning of a CSV

A customer number such as 00127 is an identifier. Turning it into 127 can break a perfectly tidy spreadsheet export.Quick thoughtclaude-codedata-quality

Mon, Jul 27, 2026Monday, July 27, 20261 entry

NoteAI at Work

Budget the Coordination Before Adding a Team

A team is useful when separate investigations or implementations can proceed at the same time. A long dependency chain does not become parallel because you…Quick thoughtclaude-codeeconomics

Fri, Jul 24, 2026Friday, July 24, 20261 entry

NoteAI at Work

Choose the Subagent Model Against the Task

Finding a filename and explaining a token-refresh failure are different tasks, even if both start by searching the same repository.Quick thoughtclaude-codeeconomics

That is the first entry in the log.

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