Life comes at you fast, and it's not always easy to soak up everything that's coming at you. You have to filter through things or you'll get overloaded. But hey, there's always time to come back to examine the things you might have missed later.
That's what these folks did, stumbling across things they probably should have known for a long time — instead, they felt like they were today years old when some info dropped into their laps a whole new world opened up to them.