Now I'm not trying to say this in a cheesy way, and I'm definitely not saying it in a romantic way either; but you'll know when you're in the right place at the right time, like when you've forgotten your charger at home and your phone dies and you walk to the nearest café and find a wireless charger, or when you've forgotten your pass to get into a building at work or college and you find out that the door is broken so it is stuck open. Basically you'll know when you know.