Chapter 25 — The Tangibles Product Manager
7 references
| # | Reference | Links | Status |
|---|---|---|---|
| 1 | Electrum. GitHub repository github.com | Source | 🟡 No archive |
| 2 | Technology Readiness Levels originated at NASA (a 1–9 maturity scale) and are now embedded in the systems-engineering toolbox, US DoD acquisition, and ISO 16290. See K. Bakke and C. Haskins, "Use of TRL in the systems engineering toolbox," INCOSE International Symposium, 2018 doi.org | Source | 🟡 No archive |
| 3 | Marty Cagan, Inspired: How to Create Tech Products Customers Love (2nd ed., Wiley, 2018); Silicon Valley Product Group, "The Four Big Risks" – value, usability, feasibility, business viability. The book builds on Cagan and Ries (see Preface) | ⚪ Print source | |
| 4 | The PR/FAQ – a mock press release plus anticipated customer questions, written before any build – is Amazon's working-backwards practice. See Colin Bryar and Bill Carr, Working Backwards (St. Martin's Press, 2021) | ⚪ Print source | |
| 5 | Oura's Sleep Staging Algorithm 2.0 runs on the ring itself and reaches 79% agreement with clinical polysomnography, against the 60–65% typical of wrist wearables. Oura ouraring.com | Source | 🟡 No archive |
| 6 | Tesla sells the Acceleration Boost – a $2,000 over-the-air performance upgrade for the Model 3 and Model Y Dual Motor – and Full Self-Driving as in-app purchases, delivered without a service visit. Tesla Support tesla.com | Source | 🟡 No archive |
| 7 | Peloton's All-Access Membership unlocks the connected bike's classes and metrics for $49.99 a month (raised from $44 in October 2025). Peloton onepeloton.com | Source | 🟡 No archive |