I agree with killer, you guys are a little tough on the guy. He is just a kid, I think all kids boost numbers a little bit make the story seem a little bit better.
Whats important is the kid is taking an interest in the same subject as we are, so what if he lied a little most kids do it, he probably did more watching then helping but give him an A for trying. We all have to start form some point. Sounds to me like the experience was overwhelming and is something he will always remember. Childhoods need a little fiction to make them memorable.