Summary : The average user is a terrible design target for digital products. High-end “Whale” users in the 95th or 99th percentile of usage volume (P95 or P99) have different needs and often generate dramatically more business value than the masses of low-end users that hit the P50 median usage metrics. The P95/P50 ratio ranges from 3 to 100 (or higher), depending on domain characteristics, leading to different recommended design strategies. Averages flatten reality. In pro

Summary : User Testing 12-step process | AI advertisements outperformed human-created ads | Users give high NPS scores to the main AI...

Newsletter subscribers | Voice sound vs character | Voice UI for old users | Does chain-of-thought help users form mental models of AI?

Summary: Luxury websites have bad usability | Poster fail: User testing, the movie | AI is Ozempic for the company | Is Microsoft Clarity...

A dataset of 74 A/B tests shows average KPI lifts of 0.2% from the statistically-significant experiments. This produced ROI of 620%.

11 books about UX for free download | US Department of Defense AI deployment plan | Design UX for the fact that users anthropomorphize AI