I love whenever this comes up. It’s a great framework for thinking about and writing docs.

It’s hard to keep documentation up to date, however, and I find that items like tutorials and reference materials (unless generated off versioned code) can drift pretty far over time.

A feature I like in concept that notion introduced with wikis ages ago was a “verification” timestamp, where you specify a timeframe after which the doc owner has to reconfirm that the doc is up to date. A bit too easy to rubber stamp, unfortunately, but maybe if it took the doc offline entirely without a more robust audit.