CNN History of the Sitcom August 9, 2021 01:16:00
Broadcasting system. >> in the late 60s ratings and demographic tools improved significantly. networks are able to see the ages, the education level and what kinds of jobs the people viewing the shoes have. >> the more they can refine that, the more advertisers wanted young professional wealthy people. >> in 1970, cbs begins what is both affection anyally and derogatively known as the royal purge. >> they cancelled all those shows with huge ratings on cbs. >> and norman lear arrived to take thei...
Source: archive.org