Circuit boards and two year olds

We've had Adalai Deale here on and off over the last week and today at lunch Gabe was convinced it was his personal mission to make sure she understood circuit boards. Yes, circuit boards. With all the seriousness in the whole world, he kept trying over and over to think of how he could explain it to her. Things like: "See, Adalai, it's like a complete circle of electricity." (she just smiles) Frustrated, he tries again: "Ok, let me think of how I can explain it to you. See it's like if you had a bunch of strings and you sewed them together." To which Adalai replies, "Silly Gabe." Completely undaunted, he says "No! It's not silly! See you can understand because it is so important!!" No matter how hard I tried to tell him that even the best explanation just wasn't going to work, he kept trying until lunch time was over. He keeps insisting that if Adalai understood circuit boards she would just love them, too! Do we have a little aspiring teacher? :-)