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D expects that a magic community such as this will think he's playing tricks, but this has nothing to do with magic, it's a real challenge for him and doctoring photos makes no sense to the challenge, if you think the photos are doctored you'll be happy to see the same effects on film. He's moving away from magic more and more and this is his biggest step in the opposite direction, as he's a magician people are bound to think with their magic caps on, this is a documentary, not a trick show, he's not doing it for you, he's doing it for himself and documenting it for those interested, if you're interested keep watching if you think its a trick then you shouldn't watch; it's about the abilities and affects of the human mind, not about tricking the audience which if he were to do, I'm sure he'd think of something a little more flamboyant than a diet!