My youngest (7) is incredibly literal, much more so than my older two were at that age. He is also incredibly math-y in a much more innate way than my other two kids. And precise. Oh the converstaions we had trying to explain why the time on the clock in the car was different than the time on his watch (about a 30-second difference). This was a conversation that lasted days.... Time is time, it's exact, why would it show up differently? Argh....