An article [0] that takes a critical stance on Paul Graham/Y Combinator, specifically Graham's advice that you should stop focussing on passing tests, despite Y Combinator being entirely built around passing tests.
The 'tests' YC is focused around are getting users and customers. Startups are strongly discouraged from working on anything else, including fundraising before Demo Day.
[0] http://benjaminrosshoffman.com/approval-extraction-advertise...