"I went back for a second helping of Avatar this Sunday. There’s a scene early on in the movie where one of the scientists walks across the lab carrying the “mobile computer slab of the future.” We’ve seen one of these in almost every sci-fi movie of the last 50 years. It comes free with a jetpack, I suppose. Except this time, one month later, my 12 year old son turns to me and whispers “Look Dad, it’s an iPad."