There's a great Albert Einstein quote that goes well with this cartoon: “Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.
I don't like the border, but other than that I think this poster is very creative. The child swinging on the light is a mixture between the symbolism for child-like joy (having fun) and an idea. The design is simple and I my eyes jumps very few times.