"Men more frequently require to be reminded than informed." (The Rambler, No. 2, 24 March 1750)
If The Idler were to express his view of the investment world and of the only consonant way to operate within it, he would abide by these Ten Foundational Principles. In his own voice, then:
Foundational Principles & Epistemology
1. Markets are not efficient.
Prices reflect a contested aggregation of beliefs, constraints, and incentives — imprecise and unstable. Inefficiencies persist for reasons structural (mandates, career risk, redemption windows), behavioral (recency bias, narrative overreaction), and informational (asymmetric attention, complexity discounts). My job is to identify which I can exploit and to ignore the rest.
2. Risk is the probability of permanent loss of capital, not volatility.
Volatility is the price of admission for accessing returns, and sometimes the source of edge. The danger is the position that cannot recover. Everything else is noise.
3. The first rule is to stay in the game.
Compounding requires survival. No edge, however real, justifies exposure to ruin. Position sizing, leverage, and concentration are governed first by survival, second by return.
4. Selection is by elimination.
Edge is not in foresight but in subtraction. The "best" businesses exist only after the fact, and only conditional on the path the world actually took. What is visible in the present is strength or fragility. The work is to see the present.
5. Asymmetry is the only durable source of long-term edge.
When the upside dominates the downside in expectation, that is what separates investment from speculation. I am not in the business of being right more often than wrong; I am in the business of being right when it matters and wrong when it doesn't.
6. Patience is structural edge.
Most market participants are forced to act on horizons that don't match the opportunities they face. Their structure imposes impatience. Capital that can wait is, by that fact alone, advantaged.
7. Process over outcome. Always.
A good decision that loses money is still a good decision. A bad decision that makes money is still a bad decision. Single-period results are noise; the only thing I control is the quality of decisions, repeated over time.
8. I do not forecast. I structure positions to benefit from a range of futures.
The question is never "what will happen?" but "what is the distribution of outcomes, what is priced, and where is the asymmetry?"
9. Falsifiability: every thesis must specify what would invalidate it.
"I just like this trade" is not a position. The discipline of writing down what would prove me wrong, before entry, is what separates investing from gambling.
10. Ignorance is to be acknowledged, not hidden.
There is structural advantage in a persistent suspicion of the limits of one's own knowledge. Acting in acknowledged opacity is superior to acting in delusional clarity. The difference between the two is not marginal. It governs sizing, structure, and timing.