The 20% scaling rule is a lie they sold you.

The 20% scaling rule is a lie they sold you.
Everyone parrots 'raise budget 20% every 3 days.' On a stable campaign that's leaving money rotting.
What actually matters: how deep your audience is, not a magic percent.
Broad geo, fat audience → I jump 50% and it holds. Tiny retarget pool → even 15% spikes CPA.
Scale to the pool, not the percent. Stop copying gurus who never spent past $500/day.