Another thoughtful essay by Errol Morris:
…But doctored photographs are the least of our worries. If you want to trick someone with a photograph, there are lots of easy ways to do it. You don’t need Photoshop. You don’t need sophisticated digital photo-manipulation. You don’t need a computer. All you need to do is change the caption.
Worth reading in full (and shorter than his previous essays on photography).
(A related post of mine is here.)