Make it. Break it. Check it.

Original demonstrations with fictional or public test inputs. No invented learner results, model benchmarks or promises of perfect AI.

A beautiful AI mockup is not proof of readable contrast

Measure a real pair of hex colours instead of trusting an accessible-looking image.

JSON can parse perfectly and still invent a fact

A three-book exercise separating syntax, field rules and source truth—with an unknown year deliberately filled in.