What is Progressive Summarization?
Progressive summarization is Tiago Forte's technique for distilling notes in layers over time: save the passage, bold the best parts on a later visit, highlight the best of the bold on another, and eventually summarize in your own words. Each pass compresses the note only as much as its usefulness has earned.
The technique answers a storage problem: a note saved today must be useful to a future you who has forgotten the context. Forte's layers, captured text, bolded passages, highlighted key sentences, and an executive summary, let that future reader absorb a note at whatever depth the moment requires, from a glance at the summary to a full reread.
Its defining rule is opportunistic compression: you add a layer only when you happen to touch the note for some real task, not on a fixed schedule. This spreads the summarization work across time and concentrates it on notes that keep proving useful, while notes that never resurface never receive effort. In practice the touches also space out re-exposure to your best material.
The method assumes a capture pipeline already exists, which is why it pairs naturally with highlighting: web and book highlights arrive as layer one, and each later interaction bolds, highlights, or summarizes further. Its critics note that compression is not comprehension; the design answer is that each layer is created in your own judgment and, at the summary stage, your own words.