
: : MDM Content Greatest Hits Complete Content Archive Quantitative Marketing Managing Growth Teams Ethics of Advertising Lifetime Customer Value LTV Freemium Subscribe to MDM Pro Darkpool Analytics MDM Newsletter MDM Slack Team Freemium Economics Book MDM Podcast About Contact Podcast : The measurement myth Published on January 29, 2025 by Eric Benjamin Seufert Half the money I spend on advertising is wasted the trouble is , I don’t know which half . 8221 Knowing the context of his work , my view of the infamous quote attributed to John Wanamaker is that advertising measurement is fundamentally and necessarily uncertain , even in success . This surfaces another , in my view , invalid interpretation of the quote : that advertising is only effective when it can be measured perfectly ,