Images are displayed for your pleasure in a seamless, strictly presentational manner. Nothing is left to the imagination in the pre-fab world of the flickering screen. As a child, I can remember my mother warning me of the dangers of television. Studies have shown that children are more imaginative when continuing interrupted stories read from books as opposed to stories shown on television screens. Also, it has been found that children who ingest heavy doses of television programming engage in play that is less imaginative than other children's.
Television stagnates the imagination.
It also detracts youthful attentions from more productive activities. Television has won the hearts of many children who have consequently divorced themselves from books, which are infinitely more valuable learning resources. Books are more valuable than television sets because reading ability has been found as the factor most related to standardized test scores. Granted, those tests are not flawless in their ability to measure intellectual worth, but they do suggest the level of a child's academic progress. And, in the past 30 years, television viewing levels per household have increased, while Scholastic Aptitude Test scores have steadily declined.