You’d think pricier booze comes in heavier bottles—but across 800 spirits, the correlation between price and weight is basically zero.

Nielsen analyzed 500 campaigns and found click-through rate predicts… nothing—not recall, awareness, intent, or even ROI.

Are there brands with few buyers but heavy loyalty? Kantar’s global data says nope—penetration and buy rate move in perfect lockstep.

System1 tested 131 radio ads—and even right after hearing them, 40% of people couldn’t name the brand.

Does last-click attribution actually prove your ads drive sales? Probly not—it’s messy, biased, and confuses correlation with causation.