EVERYONE'S A MARKETING EXPERT ... UNTIL THEY'RE NOT

Summary from the TLDR Marketing newsletter

Marketing's biggest blind spot is not inexperience but certainty, since years of success can calcify a personal lens that has quietly drifted out of alignment with the audience. Performance metrics like conversions and cost per acquisition measure whether a campaign worked, but they cannot explain why an audience felt connected or alienated in the first place. The marketers who avoid that trap treat their own reactions as a starting hypothesis rather than a final verdict, testing and adjusting based on what the data shows rather than what they personally like.