TWO WITNESSES
Ezekiel and Revelation in Substantial Agreement A Formal Tract in Comparative Prophetic Theology EPIGRAPH“At the mouth of two witnesses, or at the mouth of three witnesses, shall the…
Author: Tom Fahy
On the Biography of the Backtest
A backtest begins when a claim about advantage agrees to become answerable. Before that moment, the claim still lives on permission, intuition, and appetite. After that moment, it…
On the Jurisprudence of Positive Expectancy
Positive expectancy should not be treated as a charm, a mood, or a flattering number on a page. It should be treated as a claimant appearing before a…
Seize the Day as an Anti-Ruin Case Study
Gambling, Eligibility, and Path Failure Under Psychological Stress This essay is a comparative literary reading of Saul Bellow’s Seize the Day through the discipline of anti-ruin reasoning developed…
Ruin-Selection Theory
A Ruin-Mathematical Account of the Statistical Animal and a Critique of Prediction-Primacy Evolutionary Narratives Copyright. © 2026 Tom Fahy. All rights reserved. This work, including its original text,…
On Equity Curves and the Long Run
A positive expectancy does not promise a pleasant path. It promises only that, if you survive long enough and do not corrupt your sizing, the distribution of outcomes…
On Slow Truth and the Accumulation of Evidence
In common usage, truth is discovered quickly. A signal works or it fails. A trade succeeds or disappoints. A model is declared correct or incorrect within a short…
On Success and the Expansion of Risk Tolerance
Drawdowns expose fragility. Success conceals it. The Advantage Play Engine is designed to govern exposure under uncertainty through disciplined calibration. That discipline is tested most severely not during…
On Estimation Error and Epistemic Humility
Every modeled edge contains error. The Advantage Play Engine estimates asymmetry from observed distributions, historical dispersion, and structured assumptions regarding regime behavior. These estimates are…
Advantage Play: Ten Principles
Expectancy Governs. Allocation is justified by probabilistic asymmetry, not by narrative conviction or recent outcome. Survival Precedes Compounding. Geometric growth requires capital persistence under adverse…
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