Oh to be young and think (or project that you think) you know everything! (..says the old curmudgeon who realizes that despite all efforts to the contrary, he'

Oh to be young and think (or project that you think) you know everything! (..says the old curmudgeon who realizes that despite all efforts to the contrary, he's getting increasingly less knowledgeable percentage-wise of what's out there. However you can't fault the kid for trying!)