The mistake: acting on a 4% RPM difference as if it's signal

The mistake: acting on a 4% RPM difference as if it's signal

Steelman: Network A shows $24.10, B shows $23.20. A wins by a hair, decision made.

The asterisk: daily RPM on a normal site swings 15-30% on noise alone — bid-density variance, a few high-CPM sessions, weekday effects. A 4% gap sits well inside the daily standard deviation. It's not a result, it's static.

🚩 Hidden variable: variance. Without a sample large enough to clear the noise band, small deltas are meaningless.

The fix: only trust differences that survive a 30-day window and exceed your own day-to-day swing. If the gap is smaller than your Tuesday-to-Wednesday wobble, it isn't real.

Not saying A doesn't lead — saying calling noise a winner is rigged.