Eric Ries promoting his new book, The Lean Startup:
When they switched to routinely split-testing new features, they made a shocking discovery: most of their new features did not change customer behavior at all.
Because new features add overhead to products (generally making them more complicated), a new feature has to provide so much benefit to customers that it’s worth incurring this overhead. There is no such thing as a “neutral” new feature. “The same” means worse.
He goes on to talk about how a product needs vision, with science (testing) as a complement to that. I’m looking forward to reading the book.
Via Swombat