I agree with the point that many design methods miss real people at the edges. We often chase speed and easy learning and ignore access, culture, and fairness. The reminder to use diverse personas and equity focused checks is practical and helpful. It makes me want to pair walkthroughs with sessions that center people who are usually left out. I will not call a design finished until those cases are tested and included.

I strongly agree with this point. In practice, teams gravitate toward the KPIs that are cheapest to measure, such as clicks, sign-ups, short-term retention, while tougher outcomes like equity, safety, or long-term well-being get sidelined. The article is useful because it reframes evaluation as a toolbox: usability tests for breakdowns, probes/experience sampling for real-life fit, and A/B tests for causal impact. It changes my perspective to plan mixed-method evaluations upfront, so that what’s measurable doesn’t quietly replace what actually matters.