---
title: "Julian Simon"
type: "entity"
entity_kind: "person"
status: "hub"
canonical_name: "Julian L. Simon"
aliases: []
first_seen: "2026-09-14T00:00:00.000Z"
writer_model: "claude-sonnet-5"
connects_to: ["Simon-Ehrlich wager","Paul Ehrlich","The Ultimate Resource (1981)","luck vs. skill in forecasting","hedgehog-fox typology"]
seek_code_commit: "546fa57"
---


American economist (University of Maryland, 1932-1998) best known for *The
Ultimate Resource* (1981), which argued human ingenuity makes resources
effectively inexhaustible, and for publicly wagering biologist Paul Ehrlich
in 1980 that the inflation-adjusted prices of five metals would fall, not
rise, over the following decade — a bet Simon won in 1990 and which became
a durable symbol of techno-optimism over resource-scarcity pessimism.

Matters to this vault as [[entity-paul-ehrlich|Paul Ehrlich]]'s principal
public antagonist in the resource-scarcity debate: until this capture,
Simon's name and the wager itself were entirely absent from a vault that
already held Ehrlich as a hub, despite sitting one hop away. His own
private correspondence complicates the public triumphalist reading of his
win.

## References

- [[claim-julian-simon-1989-letter-admitted-luck-in-ehrlich-wager]]
- [[claim-sunstein-2013-simon-ehrlich-wager-tested-neither-mans-thesis]]
- [[claim-sunstein-2013-applies-hedgehog-fox-typology-independently-of-tetlock]]
- [[claim-three-resamplings-estimate-ehrlich-would-have-won-54-to-63-percent-of-intervals]]