Research
Strategy Development
From observation to rules to an honest test.
- Strategy Development3 min
Solving a problem you don't have
A better trend estimate is worth nothing if no rule consumes a trend estimate. The question that kills most method searches is not whether the method is good, but which decision it changes.
PJ Landells · 2026-09-14
- Strategy Development2 min
Why most backtests are measuring their own assumptions
Look-ahead, survivorship and selection compound quietly, and none of them announce themselves in the equity curve. A worked example of an edge disappearing under bookkeeping.
PJ Landells · 2026-08-29
