and decide between theories that were sort of hopelessly inadequate and you could just dismiss out of hand without doing experiments because it was just not up to the job yes and so I had to do an experiment and I remember the experiment where you would take you take children between 3 & 5 yes and you try and decide whether they developed during that period in the sense that during that period they started paying more attention to shape and less attention to things like color and texture so is this model of little kids which is the