Edge is what a call paid versus the price paid for it; the worst-case figure is the lower 90% confidence bound, so it separates skill from luck. Closing line value compares entries to the market's final price. Size-weighted edge shows whether the edge survives their position sizes; sizing discipline is the correlation between stake and edge. Dust, hedged pairs, and settlement-adjacent entries are excluded. This dataset accumulates for life, not 7 days.