And your point is??? You're just jealous cuz a child does not have to know all the engineering and mathematical forumulas, and can just trust in his own vision of what Santa is, and how he gets around. Oh, by the way, was this any of the same engineering logic that said it was impossible to do a quarter mile in less than 5 seconds??? Next I suppose you will tell me that the Easter Bunny is a crock too !!!! Merry Christmas, all. Santa exists, engineers are make-beleive !!!!!!!!