Ah I thought this too it has become apparent that cultures have always regulated what and how much "truth" children see. It seems as appropriate to keep children innocent until an agreed upon time which our culture has chose as 18. Its hard to see how the lie of tooth fairy, Santa etc helps because the true meaning is hidden an obscured. The idea use to be that you would give a gift, not Santa would bring one for you but simple things like this have changed and made it seem as it is. I think it's important there a "lies" kept by parents from there children just like how I see it's highly inappropriate for those vegetarian activists to stand in public places with a TV screen showing cows being slaughtered, while young children sre watching. Its the same for murder, rape etc it goes on but we dont have to have young children understanding and being showed it. I mean if your father owns an abittoir maybe you will be subject to that truth earlier.