Johnson's articles on DT were a great inspiration when I fiddled with the app. Surprise/serendipity is a moment he shares with the Zettelkasten Method -- but he focuses too much on finding new stuff in original sources (PDFs, web clippings), so you figured that out all right: his popular approach only makes you suffer from Collector's Fallacy more and more. Christian Tietze 2015-11-16 https://zettelkasten.de/posts/luedeckes-follow-up/#comment-2362116722

Christian Tietze credits Stephen Johnson for inspiration with respect to his DevonThink work and writing but accuses him of popularizing an approach which tends to draw people into the "collector's fallacy". Johnson's more traditional commonplace book approach seems to have worked incredibly well for him and allowed him to have a rather large output of books, articles, and blog posts over the years.

Tietze also suggests that the surprise/serendipity portion of the system works well for both the commonplace book and Luhmann-esque zettelkasten approaches.