That is one of the arguments. Like TV, there is the loss of time on the computer that could have been invested in something else. It really depends on how you spend that time, which can be productive. However, the older NTSC TV’s 720x486 were worse. Standard definition television, there is an explosion of pixels that happens once every 30th of a second. You are never watching a full image onscreen, but because the on and off flashing of pixels happens so quickly, your mind just fills in when the pixels are not visible so that there always appears to be an image. This process lowers your brain’s alpha waves, which is why most people can sit in front of the television and watch one show after. It also makes you more susceptible to the messaging you’re watching, which is why you feel hunger after watching a burger commercial. Jerry Mander was an executive at CBS, and he was part of lengthy studies on the effects of television throughout the 1950’s.