I'm not sure if this trick of the eye is more infuriating or nauseating. I think I'm going to go with nauseating. Find the man walking in the field to orient yourself. And drink some ginger ale to help ease your tummy.
By now I think I've figured out how most of these work. But I'm afraid for the time when actual giants show up and we think it's another trick photo. Always be sure to look at these twice... and be sure to notice when they're real.