Day 153: Before Calling It a GEO Experiment, Defend the Comparison
Consider a hypothetical proposal. No agency study, answer-engine test or client result is being reported here.
The proposal calls itself a controlled GEO experiment. A company would revise an analytics-service page and a shared overview page, leave its advisory-service page unchanged, then compare recorded answers to questions about both services. If analytics visibility rises more, the proposal would attribute the difference to the edit.
The comparison has not yet earned that conclusion.
Leaving the advisory page unchanged does not establish that advisory answers were unaffected. If those answers consult the edited overview page, the nominal comparison may also be exposed to changed material. If they do not, that pathway may not matter. The study must state and investigate the exposure assumption rather than treating “we did not edit this page” as proof of no intervention.
CMOs, Marketing Directors and founders should ask whether the design supports the causal sentence beneath its chart.