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A Higher Common Sense

A Higher Common Sense

A place for Writings about Evidence-Based Design

  • CS 177 Human Centered Product Management
    • CS177 Human Centered Product Management Syllabus
      • Lecture 5B- Agile and Storymapping
    • Lecture 1A | Introduction to Human-Centered Product Management
      • What do you want from CS177
      • 1A Welcome to CS 177: Human-Centered Product Management 1
    • Lecture 1B | Human-Centered Product Management
      • 1B Strategy for Human-Centered Product Management
    • Lecture 2A | Human-Centered Product Management
    • Lecture 2B | Human-Centered Product Management
    • Lecture 3A – Markets & Tech Stack
    • Lecture 3B — Guest and Value Proposition
    • Lecture 4B – Participatory Roadmaps & Case Study
    • Lecture 5a– Agile, User Stories and User Story Mapping
  • CS247B Design for Behavior Change
    • 1A Introducing Design for Behavior Change
    • 1B Norms, Models, Brainstorm, Screeners
    • 2A Norms and Study Guide
    • 2B Ethics, Persuasion and B=MAT
    • 3A Secondary Research and Theories of Behavior Change
    • 3B Switch, Fraud,
  • Product Management Library
  • The How and Why of Sketchnotes
    • Glossary for Design Techniques

Author: petrrlee

Product Sense Pushups: Why Spotify Learns, LinkedIn Reminds, and TikTok Sells

November 20, 2025

Personalization aligns algorithmic goals with revenue mechanics, and each platform’s strategy reveals what they’re actually selling. Spotify: Retention Through Discovery Balance Discover Weekly and…

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BUSINESS: Deploy Now, But Not For the Reasons Jeannie Thinks

November 19, 2025

Jeannie’s making a mistake I’ve seen in every case study this quarter: getting seduced by tech demos instead of solving actual business problems. PulsePoint’s…

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The Cost of Compromise: When Speaking Up Is Your Job (CASE STUDY)

November 14, 2025

If I were Susan, my first instinct would be to rationalize that it’s just marketing language, everyone exaggerates, and I need this job. That’s…

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Crisis Management: How Error States Protect Revenue

November 13, 2025

Error handling is revenue protection – each platform’s recovery flow reflects assumptions about which failures cost most. Slack: Retention Over Perfection When Slack’s message…

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Freemium’s Calculated Gamble: Spotify, Figma, and NYTimes

November 7, 2025

The three freemium models illustrate differing assumptions about the critical point at which user friction shifts from promoting conversion to inhibiting growth. Spotify: Friction…

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FarmLink Assumption Testing: Validating Our Riskiest Bets

November 3, 2025

How We Selected These Assumptions Our team reviewed the assumption map we created during David Bland’s lecture and focused on the top-right quadrant: assumptions…

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Discovery by Design: How Netflix, YouTube, and Airbnb Shape What You Find

October 30, 2025

Netflix, YouTube, and Airbnb are each engineered around different business imperatives. Netflix: The Curation Trap Netflix buries search, with their homepage being 80% algorithmic…

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Farmlink – Individual Reflection (Peter Lee)

October 24, 2025

Leading GTM for FarmLink taught me that pitch feedback forces immediate iteration. I focused on competitive positioning, confident our three-tier model solved pricing and…

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BUSINESS: Eager Sellers Stony Buyers

October 14, 2025

Nobody clicked the feature we spent three months building. Our tourist app had an info button for venue stories, map overlays, and saving/sharing tools….

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