https://www.praveenmanchi.art/blog Essays on UX/UI design, design systems, AI in user experience, and practical design craft. en https://www.praveenmanchi.art/blog/design-thinking-a-framework-every-product-designer-should-know https://www.praveenmanchi.art/blog/design-thinking-a-framework-every-product-designer-should-know Mon, 20 Apr 2026 00:00:00 GMT Design thinking's five stages explained, with an honest look at its mixed real-world record - from Natasha Jen's critique to IDEO's 2023 layoffs. https://www.praveenmanchi.art/blog/service-blueprints-mapping-the-whole-customer-experience https://www.praveenmanchi.art/blog/service-blueprints-mapping-the-whole-customer-experience Fri, 17 Apr 2026 00:00:00 GMT Service blueprints, introduced by Lynn Shostack in 1984: the five layers, how they differ from journey maps, and the broken promises they surface. https://www.praveenmanchi.art/blog/how-to-recruit-the-right-research-participants https://www.praveenmanchi.art/blog/how-to-recruit-the-right-research-participants Tue, 14 Apr 2026 00:00:00 GMT Research participant recruiting: 5 per segment works for qualitative tests, surveys need 20 or more. A screener-to-payment framework plus no-show math. https://www.praveenmanchi.art/blog/outcome-oriented-design-the-future-of-ux-in-an-ai-first-world https://www.praveenmanchi.art/blog/outcome-oriented-design-the-future-of-ux-in-an-ai-first-world Sun, 12 Apr 2026 00:00:00 GMT Outcome-oriented design, per NN/g: generative UI that adapts fonts, pre-fills airports, and surfaces window seats unasked. What it looks like and costs. https://www.praveenmanchi.art/blog/ai-agents-as-users-rethinking-ux-for-the-age-of-agents https://www.praveenmanchi.art/blog/ai-agents-as-users-rethinking-ux-for-the-age-of-agents Sat, 11 Apr 2026 00:00:00 GMT AI agents fit UX's working definition of a user: a goal, an interface, success or failure. What changes when a system, not a person, reads your design. https://www.praveenmanchi.art/blog/nielsens-10-usability-heuristics-still-relevant-in-2025 https://www.praveenmanchi.art/blog/nielsens-10-usability-heuristics-still-relevant-in-2025 Fri, 10 Apr 2026 00:00:00 GMT Nielsen's 10 usability heuristics came from a 1994 factor analysis of 249 real problems and have not changed since. How each shows up in today's UIs. https://www.praveenmanchi.art/blog/empathy-mapping-the-first-step-in-design-thinking https://www.praveenmanchi.art/blog/empathy-mapping-the-first-step-in-design-thinking Thu, 09 Apr 2026 00:00:00 GMT Empathy mapping splits research into Says, Thinks, Does, and Feels because the four rarely agree. How to build one from evidence, not from assumption. https://www.praveenmanchi.art/blog/journey-mapping-101-how-to-visualise-the-end-to-end-user-experience https://www.praveenmanchi.art/blog/journey-mapping-101-how-to-visualise-the-end-to-end-user-experience Wed, 08 Apr 2026 00:00:00 GMT Journey mapping defined properly: one actor, one goal, per NN/g. The parts that make a map actionable, and where it hands off to a service blueprint. https://www.praveenmanchi.art/blog/from-raw-data-to-insights-analysing-usability-test-results https://www.praveenmanchi.art/blog/from-raw-data-to-insights-analysing-usability-test-results Mon, 06 Apr 2026 00:00:00 GMT Usability test analysis step by step: affinity clustering, Nielsen's 0-4 severity scale weighed by frequency, and reporting findings that get acted on. https://www.praveenmanchi.art/blog/prototype-testing-validate-assumptions-before-you-build https://www.praveenmanchi.art/blog/prototype-testing-validate-assumptions-before-you-build Fri, 03 Apr 2026 00:00:00 GMT Prototype testing guide: match prototype fidelity to your research question and structure tests that surface real usability issues before code ships. https://www.praveenmanchi.art/blog/ux-research-vs-product-research-understanding-the-difference https://www.praveenmanchi.art/blog/ux-research-vs-product-research-understanding-the-difference Wed, 01 Apr 2026 00:00:00 GMT UX research evaluates whether a solution works; product research decides if the problem is worth solving. How to pick the right one for your question. https://www.praveenmanchi.art/blog/heuristic-evaluation-a-practical-diy-usability-review https://www.praveenmanchi.art/blog/heuristic-evaluation-a-practical-diy-usability-review Tue, 31 Mar 2026 00:00:00 GMT Heuristic evaluation step by step: one evaluator finds about 35% of usability problems, five reach 75%. How to rate severity 0-4 and when to user-test. https://www.praveenmanchi.art/blog/remote-usability-testing-benefits-methods-and-best-practices https://www.praveenmanchi.art/blog/remote-usability-testing-benefits-methods-and-best-practices Fri, 27 Mar 2026 00:00:00 GMT Remote usability testing now rivals in-person quality, per NN/g. Moderated vs unmoderated methods, trade-offs, and where Maze, Lyssna, and Lookback fit. https://www.praveenmanchi.art/blog/how-to-write-a-usability-testing-script-with-real-examples https://www.praveenmanchi.art/blog/how-to-write-a-usability-testing-script-with-real-examples Tue, 24 Mar 2026 00:00:00 GMT Usability testing script structure in five parts, with a worked cancellation-flow example and the phrasing mistakes that bias sessions, per NN/g guidance. https://www.praveenmanchi.art/blog/moderated-vs-unmoderated-usability-testing-which-should-you-choose https://www.praveenmanchi.art/blog/moderated-vs-unmoderated-usability-testing-which-should-you-choose Fri, 20 Mar 2026 00:00:00 GMT Moderated vs unmoderated usability testing: a decision framework from NN/g research, including why studies past 30 participants push you unmoderated. https://www.praveenmanchi.art/blog/the-complete-guide-to-usability-testing-for-ux-designers https://www.praveenmanchi.art/blog/the-complete-guide-to-usability-testing-for-ux-designers Tue, 17 Mar 2026 00:00:00 GMT Usability testing guide grounded in ISO 9241-11: the 5-step process, the sample-size math behind the 5-user rule, and mistakes that quietly sink sessions. https://www.praveenmanchi.art/blog/the-serial-position-effect-why-first-and-last-impressions-matter https://www.praveenmanchi.art/blog/the-serial-position-effect-why-first-and-last-impressions-matter Sun, 15 Mar 2026 00:00:00 GMT The serial position effect: Murdock's 1962 recall studies show first and last items stick. Why navs and onboarding should never bury key items mid-list. https://www.praveenmanchi.art/blog/figma-variables-multi-brand-design-system-modes-tokens-and-the-rest-api https://www.praveenmanchi.art/blog/figma-variables-multi-brand-design-system-modes-tokens-and-the-rest-api Sat, 14 Mar 2026 00:00:00 GMT Figma Variables let one semantic token hold three brand and two theme values via Modes. Covers token architecture, extended collections, and the REST API. https://www.praveenmanchi.art/blog/streamlining-design-handoff-with-the-figma-rest-api https://www.praveenmanchi.art/blog/streamlining-design-handoff-with-the-figma-rest-api Sat, 14 Mar 2026 00:00:00 GMT Figma REST API handoff pipeline, scripted end to end: automated specs, plus the 90-day token cap, HTTPS-only rule, and 2025 rate-limit changes. https://www.praveenmanchi.art/blog/teslers-law-the-conservation-of-complexity https://www.praveenmanchi.art/blog/teslers-law-the-conservation-of-complexity Sat, 14 Mar 2026 00:00:00 GMT Tesler's Law says every product carries irreducible complexity someone must absorb. Its 1980s Xerox origin story, and how to decide who carries the load. https://www.praveenmanchi.art/blog/the-doherty-threshold-why-400ms-is-the-ux-magic-number https://www.praveenmanchi.art/blog/the-doherty-threshold-why-400ms-is-the-ux-magic-number Tue, 10 Mar 2026 00:00:00 GMT The Doherty Threshold: IBM's 1982 study found productivity jumped below 400ms response times. What it really measured and where Nielsen's limits fit in. https://www.praveenmanchi.art/blog/cognitive-load-in-ui-design-less-is-always-more https://www.praveenmanchi.art/blog/cognitive-load-in-ui-design-less-is-always-more Fri, 06 Mar 2026 00:00:00 GMT Cognitive load theory splits mental effort into three types; only extraneous load is the designer's to remove. How to cut noise without dumbing tasks down. https://www.praveenmanchi.art/blog/the-zeigarnik-effect-using-incompleteness-to-drive-engagement https://www.praveenmanchi.art/blog/the-zeigarnik-effect-using-incompleteness-to-drive-engagement Mon, 02 Mar 2026 00:00:00 GMT The Zeigarnik effect found interrupted tasks recalled 90% more often in 1927, yet replications fail. What survives still powers progress bars and streaks. https://www.praveenmanchi.art/blog/guerrilla-usability-testing-fast-cheap-feedback-that-works https://www.praveenmanchi.art/blog/guerrilla-usability-testing-fast-cheap-feedback-that-works Sun, 01 Mar 2026 00:00:00 GMT Guerrilla usability testing on Steve Krug's cadence: a morning a month with three participants. The trade-offs, and when to recruit properly instead. https://www.praveenmanchi.art/blog/jakobs-law-why-familiarity-beats-innovation-in-ux https://www.praveenmanchi.art/blog/jakobs-law-why-familiarity-beats-innovation-in-ux Thu, 26 Feb 2026 00:00:00 GMT Jakob's Law: users import expectations from every other product they use. When to follow conventions like the top-right cart, and when breaking them pays. https://www.praveenmanchi.art/blog/the-peak-end-rule-design-the-moments-users-will-actually-remember https://www.praveenmanchi.art/blog/the-peak-end-rule-design-the-moments-users-will-actually-remember Sun, 22 Feb 2026 00:00:00 GMT The peak-end rule: Kahneman's 1996 colonoscopy study showed endings outweigh totals in memory. How to design peaks and closing moments users remember. https://www.praveenmanchi.art/blog/fittss-law-in-2025-button-size-touch-targets-and-tap-accuracy https://www.praveenmanchi.art/blog/fittss-law-in-2025-button-size-touch-targets-and-tap-accuracy Tue, 17 Feb 2026 00:00:00 GMT Fitts's Law explains why size and distance decide tap speed and accuracy. WCAG 2.2's real compliance floor is 24x24 px, not 44x44 - how to size targets. https://www.praveenmanchi.art/blog/the-von-restorff-effect-making-key-ui-elements-stand-out https://www.praveenmanchi.art/blog/the-von-restorff-effect-making-key-ui-elements-stand-out Sun, 15 Feb 2026 00:00:00 GMT The Von Restorff effect: the one item breaking a pattern gets remembered. Why relative contrast beats loudness, and how many things can stand out at once. https://www.praveenmanchi.art/blog/millers-law-why-72-chunks-is-the-golden-rule-of-ux https://www.praveenmanchi.art/blog/millers-law-why-72-chunks-is-the-golden-rule-of-ux Thu, 12 Feb 2026 00:00:00 GMT Miller's Law put working memory at 7±2 items; Cowan's 2001 review says closer to 4. Why both numbers demand chunking and how to apply it in design. https://www.praveenmanchi.art/blog/hicks-law-how-to-speed-up-user-decisions-through-design https://www.praveenmanchi.art/blog/hicks-law-how-to-speed-up-user-decisions-through-design Sat, 07 Feb 2026 00:00:00 GMT Hick's Law in practice: a 2000 jam study saw 6 options convert at 30% versus 3% for 24. How decision time scales with choices and how to design for it. https://www.praveenmanchi.art/blog/the-aesthetic-usability-effect-why-beautiful-design-feels-more-usable https://www.praveenmanchi.art/blog/the-aesthetic-usability-effect-why-beautiful-design-feels-more-usable Tue, 03 Feb 2026 00:00:00 GMT The aesthetic-usability effect: in a 1995 Hitachi study, 252 users rated better-looking ATM interfaces as easier to use. Why, and when it misleads. https://www.praveenmanchi.art/blog/5-cognitive-biases-every-ux-designer-must-know https://www.praveenmanchi.art/blog/5-cognitive-biases-every-ux-designer-must-know Sun, 01 Feb 2026 00:00:00 GMT 5 cognitive biases with evidenced product impact: anchoring, confirmation, bandwagon, availability, and status quo - where opt-out consent hit 99.98%. https://www.praveenmanchi.art/blog/the-ux-reset-of-2024 https://www.praveenmanchi.art/blog/the-ux-reset-of-2024 Tue, 20 Jan 2026 00:00:00 GMT The UX reset of 2024: 37% of UX orgs reported layoffs and field optimism hit its lowest since 2009, per MeasuringU. What the data shows really happened. https://www.praveenmanchi.art/blog/uxui-design-trends-of-2025-what-actually-stuck https://www.praveenmanchi.art/blog/uxui-design-trends-of-2025-what-actually-stuck Mon, 12 Jan 2026 00:00:00 GMT UX/UI design trends of 2025, a year later: bento grids kept spreading, Liquid Glass revived glassmorphism, and kinetic type stayed niche. What held up. https://www.praveenmanchi.art/blog/ux-mistakes-that-cost-millions-lessons-from-real-world-failures https://www.praveenmanchi.art/blog/ux-mistakes-that-cost-millions-lessons-from-real-world-failures Thu, 15 Aug 2024 00:00:00 GMT UX failures like Citibank's $900 million transfer traced back to interface design. Five famous UX disaster stories checked against primary sources. https://www.praveenmanchi.art/blog/data-visualization-in-ux-how-to-present-complex-information-simply https://www.praveenmanchi.art/blog/data-visualization-in-ux-how-to-present-complex-information-simply Mon, 22 Jul 2024 00:00:00 GMT Data visualization in UX using Tufte's data-ink ratio, WCAG's 3:1 contrast rule for charts, and NN/g dashboard research to make dense data readable. https://www.praveenmanchi.art/blog/micro-interaction-examples-14-ways-to-optimize-your-ux https://www.praveenmanchi.art/blog/micro-interaction-examples-14-ways-to-optimize-your-ux Wed, 05 Jun 2024 00:00:00 GMT 14 micro-interaction examples, from pull-to-refresh to Gmail's undo send and Duolingo streaks, analyzed with Dan Saffer's four-part framework.