Even before there was cable, people who wanted to watch TV always found something to watch.
We didn't even have a t.v. until I was 8 years old (the first big news events I remember seeing coverage of was when JFK was assassinated. Yikes, that makes me feel old!) At that time, there were only two channels available here but we still managed to find things to watch...I think at first we probably sat and watched the "test pattern" just because of the novelty of having t.v.!
