In one sentence: Jake Taylor (Farnam Street Investments, author of The Rebel Allocator) argues you can only control your process, not outcomes, and describes an "investment hygiene" framework built on health, information diet, environment and mental habits.
Key ideas
- Control the process. Taylor's baseball coaching analogy: you choose the pitch you want to hit and take your full swing. The pitch is the price the market offers; the swing is your analysis and position size. [03:00–05:00]
- One year is mostly luck. His inversion test: try to pick a stock that will lose the most in a year. It is hard to do on purpose, which shows how much luck drives one-year results. [05:00–07:30]
- Time horizons. He says markets often look 18 months out or less, so thinking two to three years ahead has less competition. He cites Philip Tetlock saying forecasts beyond about five years carry little information. Danielle plans on ten years. [07:00–11:00]
- Culture over industry for the long term. Where technology can disrupt overnight, he says adaptable, ethical management matters more than "a good horse". He finds it odd that tech gets the longest horizons. [11:00–15:00]
- The four quadrants. He splits process into internal/external and mental/physical: health, environment, information (signal versus noise) and mental models and checklists. [17:00–21:30]
- Hygiene. Like dental hygiene, it is a set of habits that create conditions for good results. [21:30–23:00]
- Don't decide when off. He won't make an investment decision unless he feels in a peak mental state. It's a "don't go" signal rather than a "go" signal. Danielle notes sleep-deprived people don't know how impaired they are. [24:00–27:00]
- Journal. Memory flatters us. He keeps a running journal per idea and updates it with new data, a Bayesian-style habit. [27:00–31:00]
- Information onion. Jim Chanos's layers: SEC filings at the core (most signal), then company investor-relations material, sell-side research, and social media at the outside. Spend your time near the core. [32:00–35:00]
How it maps to RuleOne
- The stock pages link to the SEC filings, the onion's core layer. Start there before any commentary.
- A per-company thesis journal matches the agent stack idea of recording why you bought or passed. See 001 for the research funnel.
Buffett, Munger and Graham links
- "Mr. Market" in Graham's The Intelligent Investor (chapter 8) is Taylor's pitch: you choose whether to swing at the day's price.
- Munger's inversion ("invert, always invert") is the source of the worst-outcome test.
- Munger's talk on the psychology of misjudgment covers why memory flatters us.
Words to know
- Process versus outcome: judging decisions by method, not by one result.
- Investment hygiene: Taylor's name for the habits that keep your decision-making clear.
- Bayesian updating: revising your estimate as new evidence arrives.
Try this
Start a journal for one company on your watch list. Write the date, price, your thesis in two sentences, how you feel, and one thing that would make you wrong. Open /stock/TICKER/ for the ticker and add a line each time you read something new.
Check yourself
- Why is a one-year result a poor test of skill?
Answer
Over a year luck dominates. It is hard to lose or win on purpose. - Which information is closest to the "core" of the onion?
Answer
SEC filings, which the company must publish, good or bad. - What is Taylor's "don't go" rule?
Answer
If you aren't in a clear state of mind, postpone the decision.
Short quotes
"You can't eat process." (Taylor, ~03:00, auto-transcribed)