Book Insight: What I Learned Losing a Million Dollars

Book by Brendan Moynihan and Jim Paul

Decision-making Uncertainty

A decision can be good or bad, never be right or wrong, as we cannot know the future, so we should not connect decision making with our Self-Awareness.

Fooled by Psychology

  • Successive independent events are additive, not multiplicative.

  • Do not overestimate the frequent occurrence of infrequent events.

  • Do not confuse the occurrence of "unusual event" with "low probability event."

  • Do not confuse risk with probability.

  • In market events, case probability is not equal to class probability. So it is essential to manage exposure to risk instead of predicting profit.

Money odd vs. Probability odd

Risk Reward ratio has nothing to do with the Probability that the market direction. We cannot know the Probability of price achieving reward.

Profit Motive or Propitiate Motive

We need to distinguish whether we are in the market for money or having recognition by predicting events.


Individuals decide using Reasoning, deliberation, and analysis, whereas the crowd makes decisions based on feeling, emotion, and impulse.

Rules, Tools, and Fools

Uncertainty runs the market. If there was no uncertainty (i.e., socialism system), there's no need to have a stock market.

Steps for decision making

  1. What Kind of Participant are you?

It would be best to determine whether you are an investor, trader, speculator, or gambler.

2. Method of analysis.

First, you need to identify the market type you need to participate in, i.e., Stock (Cash, Future & Option), Bonds, Commodity, etc.

Learn about the various methods of analysis.

3. Develop Rules

It would be best if you had Entry, exit rules in terms of if-then flow.

4. Establish Control

Here you define exit criteria for profit or loss before Entry. Control should follow the strategy, not otherwise.

5. Formulate Plan

The plan should have Stop, Entry, Price objectives. Scenario planning will help in clarifying risk and uncertainty. The plan requires thinking, which a crowd cannot do.

It's not wise to violate rules until you know how to observe it."Learn rules like a scientist so you can break them like an artist."

When you are not good at following them, you don't distinguish between when it's safe to break the rules and when it is not. Further, profit will not be related to specific past behavior.

The threshold of pain and success in the market has inverse relations.

Never personalize losses.

Reason for failure

When losses start, Refuse to acknowledge & accept the reality of losses because doing so will negatively reflect you.