According to this 1972 Life magazine ad for one of the first Sony VCRs, the Sony U-Matic will cut cancer mortality rates by 1/3rd. The rationale is wonderfully clueless on how the whole peer and FDA-approved medical system works.
From the second page:
Suppose a cancer specialist has some valid success with a new form of treatment.
He doesn’t wait to present a paper at some future medical convention.
Then and there, he records his technique on a U-matic color videocassette. Thousands of copies are mailed and made out.
Within days, thousands of doctors in hospitals and private offices have seen the technique on their U-matic, and can put it to use.
Of course, so do malpractice lawsuits. However, Sony was right on the money about one thing: the U-matic copy eerily soothsays the era of invasive and ubiquitous video surveillance.