Where does the time go?

I was looking through some pictures and I just can't believe how quick Ben has grown up!!  Three years ago, he was this teeny tiny little 3 year old Slippery When Wet sign (totally cleaned up at the Halloween Costume Contest) and the next thing you know, he's six , almost seven, sittin in the bathtub with his goggles on.  

Where does the time go?

Funny story:  Today at lunch, out of the blue, he says to me, "Ya know those people that eat fire at the circus?  Do you know how they do that?  They're really fire-proof robots."  And he was serious.  I guess he's not too grown up, yet.  Whew!!