I had a question about dog tags.  None of you are wearing dog tags.  Nor are there name patches or rank insignia on anyone.  US Army is present but nobody knows what that is, nor do you recognize the red white and blue flag.

 okay, that raises the question of how much we do know. Do we know what guns are?

EDIT: Scratch that - you know what everything is, and I mean everything.  However, you have zero practical experience using any of it.  You might know what an M-16 is, but you have no idea what it's like to fire one.

You know concepts, but have no firsthand knowledge at all.