Operator gut check when two systems conflict

Two books, one operator

A core trend-following method can remain unchanged for five years and still become hard to operate after a second approach is added. The original rules need not change for the combined book to become a different job.

A short-term countertrend capability can be modeled, computer-tested, and combined with the original book and still fail as a live dual-system procedure. The computer can hold both rule sets at once. The operator still has to fire them.

Netting the operator will not take

A plan to net conflicting trades can be easy to state as a rule and still fail in live use if the operator will not take the anti-trend side. The written net is not the live book if one side is skipped.

Once capital is at risk, newly noticed fears become part of what must be measured before the combined procedure can be treated as usable. Fear and greed can remain the binding execution constraints after extensive computer testing of the combined rules.

How the offering was packaged

A mechanical offering can be described as two years of study of a famous trader's writings plus physics training while being denied as that trader's own system. Promotional copy can attach famous names and research or computer-analyst titles that the seller had not actually held in employment.

The same seller can face a 30000 fine with a cease-and-desist order and a 291000 copyright judgment on an earlier product, then decline review of a later system that appears to lack a disclosure document.

Editorial reading: those packaging claims and later enforcement facts do not settle the operator question. The dual book is still the set of entries, exits, and skips that will be fired when the two rule sets disagree.