The Manager's Path

The popular doubling rule of software estimation is, “Whenever asked for an estimate, take your guess and double it.” This rule is appropriate and good to use when you’re asked for an off-the-cuff guess. However, when you’re talking about projects that you think will take longer than a couple of weeks, go ahead and double the estimate, but make it clear that you’ll need some planning time before you’re sure about the timescale.