Drawer 02 · 539 notes · 32 people · 2005–2026

Discovery & customer research

Customer interviews, opportunity mapping, validation, and jobs to be done

Q:
Answers from Discovery & customer research notes, cited
Product Talk · Teresa TorresJun 24, 2015

The Dos and Don'ts of Hypothesis Testing

Jun 24, 2015

Teresa Torres argues that many product managers run experiments poorly: they struggle to choose what to test, decide how long to run tests, lack scientific training, find tools hard to use, and overgeneralize results…

Product Talk · Teresa TorresNov 12, 2014

The 5 Components of a Good Hypothesis

Nov 12, 2014 · 6 min

Teresa Torres argues that product teams should test ideas with experiments before building them, and that this starts with a well-formed hypothesis. Vague statements like 'a redesign will improve usability' cannot be…

SVPG · Marty CaganDec 28, 2009

The Product Decade

Dec 28, 2009

Marty Cagan argues that the coming decade will be among the most productive for product innovation. He points to four converging forces: ubiquitous connected mobile devices, powerful platforms that give apps instant…

Lenny’s Newsletter♥ 185

The ultimate guide to willingness-to-pay

Feb 13, 2024 · 24 min
Subscriber post — summary only

Kristen Berman walks through the four main quantitative willingness-to-pay methods (Van Westendorp, Becker-DeGroot-Marschak, multiple price list, and discrete choice), comparing their strengths and biases. She argues…

SVPG · Marty CaganApr 30, 2013

Stakeholder Management

Apr 30, 2013 · 5 min

Marty Cagan argues that stakeholder management is a frequent pain point for product managers, but it can be substantially improved. He defines stakeholders narrowly as people who hold veto power over launching work…

Product Talk · Teresa TorresOct 28, 2013

How Not To Find a Product Job

Oct 28, 2013

Torres argues that the standard job-hunt routine of polishing a resume and mass-applying to postings rarely works, even for strong candidates. Instead, she proposes treating yourself as a product and applying the…

Product Talk · Teresa TorresJul 31, 2013

Stop Asking "Whether or Not" Questions

Jul 31, 2013

The author describes a lunchtime request from a sales director to build a feature that could keep a few at-risk customers, and argues that the framing of 'should we build it or not' is too narrow. Drawing on Chip and…

Lenny’s Podcast95 min

The social radar: Y Combinator’s secret weapon

Jessica Livingston · Jun 27, 2024
Key learnings
  • Watch how co-founders interact: whether they get along, finish each other's sentences, or let one partner dominate, since…
  • Treat defensiveness under questioning as a red flag; strong founders respond with "here's what I figured out" and engage in a…
  • Look for earnestness: founders who admit when they don't know an answer and who have a real personal connection to the problem…
Product Talk · Teresa TorresApr 24, 2012

User Stories Are Better Than PRDs

Apr 24, 2012 · 4 min

Teresa Torres argues that user stories communicate product requirements more effectively than traditional Product Requirement Documents. Long PRDs tend to be read once and then abandoned, while a set of user stories…

SVPG · Marty CaganAug 18, 2025

Build vs Buy in the Age of AI

Aug 18, 2025 · 6 min

Cagan argues that the build-versus-buy question, long familiar in IT and product teams, is being reshaped by generative AI and user-programming tools like Lovable and Bolt. Despite hype that everyone will build and SaaS…

SVPG · Marty CaganApr 4, 2010

The Domesticated Computer

Apr 4, 2010 · 3 min

Marty Cagan recalls his early-1980s work at HP Labs, where research head Joel Birnbaum asked why most people dislike their computers, and proposed the idea of a 'domesticated computer' that adapts to people rather than…

SVPG · Marty CaganJul 23, 2007

Estimating Project Costs

Jul 23, 2007

Cagan argues that cost estimation in software stays confusing because management needs cost figures very early, while engineering can only produce accurate estimates after the solution is detailed. This mismatch leads…

SVPG · Marty CaganJun 9, 2025

Creating Intelligent Products

Jun 9, 2025 · 6 min

Marty Cagan argues that the products most PMs will build in the coming years are "intelligent products" that blend deterministic and probabilistic behavior. He traces the history of AI from 1980s expert systems, whose…