Around the turn of the millennium, alongside the books, I built two things that have since come back as 2020s arguments: online technical courses, and the tests companies use to screen engineering candidates. I wrote and taught courseware for DigitalThink and ComputerPREP in 1997–98, and from 1998 into 2002 I authored and vetted the interview question banks ReviewNet sold to employers for screening engineers.

None of it survived the way a book does. The course players needed plugins that no longer exist, and the test banks were proprietary by design. What’s here is the record that the work happened, with a short 2026 note on each about how odd it is to watch the ideas come back around.