A good case can be made for a more radical view of the relation between line drawings and the objects or scenes they represent. It has often been presumed that, because line pictures leave out surface texture, color, shading, and detail, they are impoverished representations. But sometimes simple line drawings or sparse paintings may actually be better representations than more complex renderings or photographs. Line figures are simple and uncluttered compared to photographs or other kinds of drawings. They tend to bring out the essence of the thing represented. In fact, caricature drawings that distort the object depicted can bring out the object’s essence even better than more accurate line drawings. Experiments have shown that caricatures or cartoons require less time for correct recognition than do more "realistic" pictures. On empirical grounds, the convention explanation can be faulted in a number of respects. Consider, for instance, the result of a bold experiment done by Julian Hochberg and Virginia Brooks at Cornell University. They raised their son for the first two years without allowing him to see pictures, even advertisements on food containers or billboards. In situations where the child might have seen a picture inadvertently, they provided no interpretation of or label for it. When the boy was about 2 years old, he was asked to identify pictures of various kinds, including simple line drawings of shoes and other familiar objects. He had no difficulty identifying the pictures. If we assume that this finding can be generalized, therefore, it can hardly be argued that the perception and recognition of line drawings is a matter of learned convention.