The structure of the claim
Conjunctive definitions are rare because they are expensive.
Most performance vocabulary is generous by construction: a strong month needs one strong number, and the rest is context. Defining alpha as the simultaneous satisfaction of five conditions inverts that, and the cost is real — the label becomes rare, and months that felt excellent will not qualify. That cost is the point. A term awarded whenever the headline is favourable stops carrying information within about two quarters, because it will have been applied to over-risked months, override-driven months, and lucky months alongside the genuine ones. Making it hard to earn is the only way to keep it worth earning.
Schematic: a month clearing the benchmark on return while failing two conditions. The headline is unchanged by the failures; the classification is entirely changed by them.
