It's lucky that we have Marokai and Memphis and their extended travelling to the far corners of the globe to inform us about the real world out there.
I have done a fair bit of travelling in my life, but my point has nothing at all to do with going to some exotic destination. It's about being old enough to have lived life outside of school. I enjoyed school quite a bit, but the outside world is just as educational, but in a different way. Jobs, bills, relationships, and all the rest. You learn those things from living life, not from sitting in a classroom. It's not a 19 year old college student's fault he hasn't learned the nuances of those sorts of things yet, but that still constitutes a void of knowledge.