I’ve always wondered if it has something to do with the software building process in general. First you get burned a few times because you overlook edge cases. As your skills improve, you get better at anticipating these problems. But then you reach a point where it goes overboard. You start seeing ghosts that aren’t there and solving problems that don’t exist. The mindset that helped you improve as a developer eventually makes you over think things and you need to go back to focusing on solving specific problems.