From my own experience, I've seen some "Hobo's" are in my eyes way "intelligenter" than some other guys which got A+, because people which only learn, can't make their own experience.
Let's get a simple Example :
A "Hobo" get a kid, he/she will give her/him love.
A "A+ student" get a kid, she/he will read books how to handle kids, but then he forgot the main thing, how should he be able to give love, when he never got it by his parents, and learned it?
This was some crazy example, hope you understand what I mean.