If you are so sure of yourself, model it. http://www.lunametrics.com/blog/2016/04/21/compare-actual-vs-predictive-data-with-ga-causalimpact/ http://www.lunamet

If you are so sure of yourself, model it. http://www.lunametrics.com/blog/2016/04/21/compare-actual-vs-predictive-data-with-ga-causalimpact/ http://www.lunametrics.com/blog/2016/04/21/compare-actual-vs... https://google.github.io/CausalImpact/CausalImpact.html https://google.github.io/CausalImpact/CausalImpact.html Because some of the people who studied marketing did not sleep through their econometric classes.