The phrase originates with Ernest Hemingway. In The Sun Also Rises, published 1926, the character Mike Campbell describes his own bankruptcy: it happened two ways, gradually and then suddenly. The line is offered as a joke. It has the shape of a paradox and the rhythm of a punchline.
On August 2, 2019, Parker Lewis published the first essay in a series on the Unchained Capital blog. He titled the series “Gradually, Then Suddenly.” In the opening paragraph he named the source — Hemingway, on the process of going bankrupt — and proposed an extension: this is also how government-backed currencies hyperinflate, and it is also how individuals come to understand bitcoin. The essay went on to argue that the dollars unwinding and the bitcoin learning curve share a structural pattern in which slow accumulation precedes rapid recognition.
The series ran weekly through 2019 and into 2020, eventually reaching nineteen essays. In December 2023 Lewis published a hardcover book collecting them. By that point the phrase had detached from the essays and the essays had detached from the series. People used “gradually, then suddenly” in tweets and podcasts and casual conversation without referring back to the source. The phrase circulated. The essays were footnoted.
What the catalog flags here is the redeployment, not the original. Hemingway named a structural pattern. Lewis applied it to a specific domain — monetary collapse and individual understanding — and the application was specific enough and timely enough to enter bitcoins working vocabulary. The community did not adopt Hemingway. It adopted Lewiss particular use of Hemingway.
The phrase serves three rhetorical functions in bitcoin discourse, in roughly the order they emerged. First, as monetary commentary: fiat is failing gradually, then suddenly. Second, as adoption commentary: institutions are accumulating gradually, then suddenly. Third, as personal-conversion commentary: the way someone comes to understand bitcoin happens gradually, then suddenly. All three uses are common. The phrase works because the underlying pattern — slow-then-fast, accumulation-then-recognition — is genuinely how nonlinear processes look from inside them.
It is also an unusually well-made phrase. Two adverbs separated by a comma. Five syllables on either side of the punctuation. The first half describes the boring part; the second half describes the part nobody saw coming. The rhythm of the sentence rehearses the thing the sentence is about. Lewis did not write that — Hemingway did — but Lewis recognized it.
The essay series and the book are in the sources. The artifact is the phrase. The phrase belongs in the same category as Vires in Numeris and Its Going Up Forever, Laura: a line whose origin is not the catalogs subject but whose deployment in bitcoin culture is.
Hemingway named the pattern. Lewis pointed it at bitcoin. The community accepted the gift.