Big question
When the answer replaces the click, how do you prove search still produces sales?
The position
You can watch whether you get cited. You cannot connect a citation to a sale. Anybody selling you a rank inside an answer is selling a screenshot.
Why it is live
Answer engines read your pages, cite them and return no query, no rank and often no referrer, so a change in citations cannot be tied to anything a business counts. Pew found materially fewer clicks on traditional results when Google showed an AI summary, and both Google and the IAB shipped ways to score visibility inside AI answers during 2026.
The case for it being measurable
DocumentedGoogle's generative performance reports and the IAB's August 2026 visibility guidance give presence and citation a defined unit for the first time.
The case against
UnknowableNo answer system exposes a query log, no ranked list is produced at any stage of a sampled generation, and an arrival carries nothing saying where it came from.
Where the weight sits
Against, strongly. Presence became countable in 2026 and causation did not, and the two are being sold as though they were the same purchase.
What would change this
An answer provider adding a referrer parameter or publishing citation and query logs, or a court ordering the same disclosure in a live case.
Where this is taught
Connected Search
Sources
- Pew Research Center, 22 Jul 2025primary
- Google Search Central, 3 Jun 2026primary
- IAB measuring visibility in the AI era, 3 Aug 2026primary