Proof that TV doesn't harm kids:
Most studies of the impact of television, however, are seriously flawed. They compare kids who watch TV and kids who don't, when kids in those two groups live in very different environments. Kids who watch no TV, or only a small amount of educational programming, as a group are from much wealthier families than those who watch hours and hours. Because of their income advantage, the less-TV kids have all sorts of things going for them that have nothing to do with the impact of television. The problem with comparing them to kids who watch a lot of TV is like the problem with a study that compared, say, kids who ride to school in a Mercedes with kids who ride the bus. The data would no doubt show that Mercedes kids are more likely to score high on their SATs, go to college, and go on to high-paying jobs. None of that has anything to do with the car, but the comparison would make it look as if it did.