There were four major HDTV systems tested by SMPTE in the late 1970s, and in 1979 an SMPTE study group released A Study of High Definition Television Systems:
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who tested the four major HDTV systems in the late 1970's?
Ah, so.. SMPTE

Some agriculturalists also regularly hunt and gather (e.g., farming during the frost-free season and hunting during the winter). Still others in developed countries go hunting, primarily for leisure. In the Brazilian rainforest, those groups that recently did, or even continue to, rely on hunting and gathering techniques seem to have adopted this lifestyle, abandoning most agriculture, as a way to escape colonial control and as a result of the introduction of European diseases reducing their populations to levels where agriculture became difficult.[citation needed][dubious – discuss]
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Besides avoiding government controls, what other reason could they have?
Ah, so.. agriculture became difficult

All of these elements struck a chord with the older readers, such as college-aged adults, and they successfully gained in a way not seen before. In 1965, Spider-Man and the Hulk were both featured in Esquire magazine's list of 28 college campus heroes, alongside John F. Kennedy and Bob Dylan. In 2009 writer Geoff Boucher reflected that, "Superman and DC Comics instantly seemed like boring old Pat Boone; Marvel felt like The Beatles and the British Invasion. It was Kirby's artwork with its tension and psychedelia that made it perfect for the times—or was it Lee's bravado and melodrama, which was somehow insecure and brash at the same time?"
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who compared DC comics to the Beatles?
Ah, so..
unanswerable