INDEPENDENT RESEARCH FOR PAID ACQUISITION OPERATORS

FIELD
NOTES

FEATURED / INCIDENT DIAGNOSIS

Stop asking why CPI increased. Ask what moved it.

Decompose the movement, localize its contribution and remove most wrong explanations before opening a broad investigation.

Open the incident method ↗
DECOMPOSE THE MOVEMENTΔlog(CPI)
+Δlog(CPM)
Δlog(CTR)
Δlog(CTI)
RANK CONTRIBUTION → LOCALIZE
NO.TOPIC / TITLETERMINAL RESULTDATE / READ
07
SATURATED EDGE

Can You Cut 15% From This Channel Without Losing Sales?

CUT EDGE / SMALLER EDGE / RETEST

02 AUG 2026
9 MIN
06
CHANNEL TRIAGE

Low ROAS Is Not a Cut Decision

ONE INVESTIGATION ROUTE

02 AUG 2026
8 MIN
05
RESPONSE CURVES

A Model Can Always Draw a Response Curve. Can Your Data Reveal One?

FIVE READINESS ROUTES

02 AUG 2026
9 MIN
04
MEASUREMENT

When Is Attribution Enough—and When Do You Need Incrementality or MMM?

MINIMUM NEXT CAPABILITY

01 AUG 2026
9 MIN
03
CHANNEL CUT

Attributed ROAS Fell. Should You Cut the Channel?

CREDIT VS BUSINESS LOSS

01 AUG 2026
8 MIN
02
CAUSAL CLAIM

Can Your MMM Support a Causal iROAS Claim?

SIX-GATE RELEASE

01 AUG 2026
10 MIN
01
INCIDENT DIAGNOSIS

Stop Asking Why CPI Increased. Ask What Moved It.

CONTRIBUTION ROUTE

01 AUG 2026
8 MIN