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115 · Misbehaving (Part 2)

2017-06-20 · 39 minReduce basis

In one sentence: Phil and Danielle walk through Thaler's examples of human quirks (endowment effect, sunk cost, house money, loss aversion), then use the Washington Redskins' draft trade to show how wanting results now defeats patient, evidence-based decisions, a mistake Buffett's cash pile avoids.

Key ideas

How it maps to RuleOne

Buffett, Munger and Graham links

Words to know

Try this

Pick a position on /holdings/ or a stock on your watch list. Ask: "If I didn't own this today and had the cash, would I buy at today's price?" If not, write which bias (endowment, sunk cost, or house money) is making you keep it.

Check yourself

  1. What is the sunk cost mistake?
    AnswerLetting money you've already spent and can't recover decide what you do next, such as braving a blizzard for tickets you paid for.
  2. Why might reducing your basis to zero encourage the house-money effect?
    AnswerThe remaining stake feels like free money, so you may take more risk or stop judging the business, even though the position can still lose value.
  3. What does the Redskins story show about patience?
    AnswerThe owner agreed with the data and then abandoned it because he wanted to win now. Evidence-based plans pay off slowly, so many people quit them.

Short quotes

"You don't make money when you buy, you don't make money when you sell, you make money when you wait." (Phil, quoting Munger, ~9:45, auto-transcribed)

behavioral economicsendowment effectsunk costhouse moneyloss aversioninstitutional imperativepatienceshiller capereduce basisthaler

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AI study notes from an automatic transcript. Names and figures may be misheard, and quotes are short excerpts for study. Not investment advice.