Now, I'm not Thomas Edison or anything, but I'm pretty confident that when you design something, the intention should be that it works. Otherwise, what's the point at all? Well, I think that thought may have slipped these people's minds because these ideas almost seem liked someone wanted them to fail.
I refuse to believe that these things were made like that on purpose, but maybe you should be the judge. Take a look at these pictures that I'm pretty sure someone designed for failure.