
The extensive revision by Charlie in 2005, made from memory unassisted by any research, occurred because Charlie thought he could do better at age eighty-one than he did more than ten years earlier when he (1) knew less and was more harried by a crowded life and (2) was speaking from rough notes instead of revising transcripts. This talk was written exclusively for Poor Charlie’s Almanack and is published on fs.blog with the written permission of both Peter Kaufman and Charlie Munger.

He also emphasizes the “lollapalooza” power of psychological misjudgments in combination.

He shares with us his checklist of twenty-five standard causes of human misjudgment, which contains observations that are ingenious, counterintuitive, and important-values Charlie treasures in the work of other great thinkers throughout history. The talk features Charlie’s original concept of “behavioral finance,” which has now burgeoned into its own academic field of study.Ĭharlie also addresses the importance of recognizing patterns to determine how humans behave, both rationally and irrationally. In the run-up to publishing Poor Charlies Almanack, Charlie Munger remarked that “The Psychology of Human Misjudgment” could use “a little revising” to bring it in line with his most current views on the subject.Ĭharlie’s “little” revision would amount to a full-scale rewrite, with loads of new material, and a “stop-the-press” completion schedule.

The Psychology of Human Misjudgment is considered the magnum opus on why we behave the way we do.
