Reflexivity

In Boom — Bubbles & The End of Stagnation, reflexivity is the load-bearing mechanism behind the book’s model of innovation-accelerating bubbles. The book defines it, via George Soros, as “the positive feedback loop between expectations and prices that drives market dynamics” — and traces the concept’s lineage to Karl Popper (Soros’s professor) in the philosophy of science, alongside Robert K. Merton’s coinage of the “self-fulfilling prophecy.” The claim is that social systems are “inherently reflexive”: predictions, like self-fulfilling prophecies, can affect or create the reality they try to predict, across financial bubbles, technological development, and even the rise of governments and religions.

The book puts reflexivity to work as the engine of beneficial bubbles. Optimism becomes a self-fulfilling prophecy: by generating positive feedback cycles of enthusiasm and investment, bubbles bootstrap risky exploratory projects that would otherwise never be financed. Moore’s law is the canonical example — “a backward-looking observation that transformed into a self-fulfilling prophecy,” a coordination mechanism that stayed true because everyone in the industry acted as if it would. The authors extend the same “hyperstitional reflexivity” to present-day bets in AI, nuclear, and biotech, where definite optimism plus reflexive belief coordinates high-agency founders toward a future radically different from the present.

Context: Reflexivity, as popularized by hedge-fund manager George Soros (notably in The Alchemy of Finance), holds that market participants’ biased perceptions influence the fundamentals they are trying to assess, creating two-way feedback rather than a one-way march toward equilibrium.

Where this appears

• Boom — Bubbles & The End of Stagnation — Soros/Popper reflexivity as the feedback mechanism behind the book’s bubble model; Moore’s law as a self-fulfilling prophecy