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Before you make a data chart, decide what decision it should help someone make
A chart is a job, not decoration. Learn explore versus explain versus persuade so the next deck chart answers a real decision instead of filling a slide with…
Git-friendly habits for beginners
Part 5 closes the ChatGPT Codex tutorial with beginner git habits: branch per task, small commits, clear messages, PR review, and never force-pushing blind. Learn undo basics, recap…
How to set up Claude Cowork and run your first file task
Part 2 of the Claude Cowork tutorial walks paid-plan setup, a dedicated working folder, and one real file task you can finish and review. You leave with a…
How to document data quality so other teams trust your tables
Trust needs a light paper trail, not a bureaucracy. Publish a simple data quality scorecard with owner, metrics, known issues, and next check so teammates can rely on…
Why passing tests don’t prove ChatGPT Codex got the code right
A passing test only proves the cases it tries. When Codex writes the fix and the test together, check three things: the new test fails without the fix,…
