It's a proven fact that the flashes of light from the tele actually cause a person to experience a form of hypnosis.
The human eye can read at a rate of 1/100th fps (frames per second). Television typically ranges from 30 - 60 fps. Below that rate would be perceived as flickering and above would be continuous light.
If you look at the evolution of television and the film industry you'll notice dramatic differences quickly within the industry. That's because LIKE ALL THINGS there is a science to it. People are paid a lot of money to make sure you don't walk away from a program or turn it off. That explains the quick frames, extreme lighting control, action and need for quick transitions.
Why do you think stations hate dead air?
Yes, you can feel bad for wasting your entire evening watching that rerun you've seen 1,000 times before but now you have someone to blame. Don't be fooled by the manufactured light. Choose how you live your life and spend your time.
Wake up and welcome back to the REAL WORLD.
"Boredom doesn't exist. I have too many hobbies to ever feel bored. People who use this term obviously aren't stimulated by life and aren't using their brains for real thinking."
- [loosely quoted] by Matthew Ziff