No one, nobody can ever judge what is going on with the scraped welded metal till he throws light at tit and notices the shadow. That is the moment he will be left flabbergasted. This is because, the shadow appears to be a bike. Even at that, it looks perfectly drawn out of a bike itself. It is amazing how these shadow artists bring up such an amazing shadow illusions that leave us astonished at their creativity and the zeal for their work.