Gurpel said:
I wonder how many people walk into walls every day because of this guy?
I doubt there's many if any:
Those pictures were taken from the ideal angle at the ideal time of the day with the ideal weather circumstances. Take the picture from another angle and when it's darker and it would be very easy to see it's fake. Also, when you move (which you'd need to do if you were to run into the wall), your brain would immediately tell you "hold on, something's wrong here!" because the perspective wouldn't change. But most of all: NONE of these paintings would look convincing the moment you're only a few feet away so unless you're reading a paper and not looking where you're going, it's doubtful.