Proof test
Five ways to make a claim believable.
- Variable
- The type of proof: insider (the clerk who restocks it), referral ("my boy showed me"), savings, a founder's workflow, and the checkout moment.
- Held constant
- UGC format, one speaker, one line, under 8 seconds.
- How we call it
- Which proof style lifts conversion rate per vertical. Insider proof tends to work for retail products, referral for considered purchases, savings for budget-led buyers.
Proof is the gap between a click and a purchase. Matching the proof type to the buyer is a structural choice, not a copywriting flourish.