Problem: Due to the work nature of airline pilots, who often cross several timezones and regions of sunlight and darkness in one day, and spend many hours awake both day and night, they are often unable to maintain sleep patterns that correspond to the natural human circadian rhythm; this situation can easily lead to fatigue. The NTSB cites this as contributing to many accidents[unreliable medical source?] and has conducted several research studies in order to find methods of combating fatigue in pilots.
Who follows a very natural human circadian rhythem?
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Answer: unanswerable

Problem: The NES was released after the "video game crash" of the early 1980s, whereupon many retailers and adults had regarded electronic games as being merely a passing fad, and many believed at first that the NES was another fad. Before the NES/Famicom, Nintendo was known as a moderately successful Japanese toy and playing card manufacturer, and the popularity of the NES/Famicom helped the company grow into an internationally recognized name almost synonymous with video games as Atari had been during the 2600 era and set the stage for Japanese dominance of the video game industry. With the NES, Nintendo also changed the relationship of console manufacturers and third-party software developers by restricting developers from publishing and distributing software without licensed approval. This led to higher quality software titles, which helped to change the attitude of a public that had grown weary from poorly produced titles for other game systems of the day.
Nintendo didn't produce toys and what other item before its game system?
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Answer: unanswerable

Problem: As the 1990s dawned, gamers predicted that competition from technologically superior systems such as the 16-bit Sega Mega Drive/Genesis would mean the immediate end of the NES's dominance. Instead, during the first year of Nintendo's successor console the Super Famicom (named Super Nintendo Entertainment System outside Japan), the Famicom remained the second highest-selling video game console in Japan, outselling the newer and more powerful NEC PC Engine and Sega Mega Drive by a wide margin. The console remained popular in Japan and North America until late 1993, when the demand for new NES software abruptly plummeted. The final Famicom game released in Japan is Takahashi Meijin no Boken Jima IV (Adventure Island IV), while in North America, Wario's Woods is the final licensed game. In the wake of ever decreasing sales and the lack of new software titles, Nintendo of America officially discontinued the NES by 1995. However, Nintendo kept producing new Famicom units in Japan until September 25, 2003, and continued to repair Famicom consoles until October 31, 2007, attributing the discontinuation of support to insufficient supplies of parts.
How late did Nintendo continue to repair nonFamicom units?
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Answer:
unanswerable