My friend is a product manager at a popular consumer tech company, and he was lamenting the rise of metrics-driven development. “If we send a single push notification, 7% of people open the app,” he said. “But if we send two push notifications, five minutes apart, 12% of those people open the app.” Intuitively we can sense that sending two, or ten, push notifications in five minutes is—long term—probably a bad idea.
