In the presentation shown at http://www.startuplessonslearned.com/2008/09/customer-development-engineering.html http://www.startuplessonslearned.com/2008/09/cus

In the presentation shown at http://www.startuplessonslearned.com/2008/09/customer-development-engineering.html http://www.startuplessonslearned.com/2008/09/customer-develo... (specifically the last slide where he talks about the Five Why's system) it seems to me that the guru of Lean Startups is a advocate of automated test suites, and therefore a believer in TDD.