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Back to The Future/Headscratchers: Difference between revisions
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*** If the time circuits measure time in minutes after 0000-01-01 00:00 (assuming a proleptic Gregorian calendar with no 4000-year rule), then the smallest amount of memory that could be used to express all values from then until 9999-12-31 23:59 would be 33 bits (unsigned). This would actually cover it until approximately the beginning of April 16332, but you might have trouble seeing it on the Present Time display. If they measured time in ''seconds'' following 0000-01-01 00:00, you'd need at least a 39-bit unsigned integer, which would cover you until roughly mid-January 17421.
**** I don't think Doc ever planned to travel that far in time. The machine may have been intentionally built not to be capable of it, or he may have had some technical solution, or been able to think one up, if he changed his mind.
**** If he didn't stop at four-digits, how many was he going to stop at? Five? Six? 34? 24187? It probably would have been a bit mind-boggling even for the Doc to travel to build the Delorean with the ability to travel [[Toy Story (franchise)||to infinity and beyond]].
**** Besides, a 4-digit year is a good cut-off point as that can theoretically get a person back as far as the Late [[Stone Age]].
** I don't think he'd ''ever'' deliberately go that far into the future. Traveling ''30 years'' into the future is risky enough. Who would have the ''slightest idea'' what to expect in the 100th century? The Earth might have been rendered completely uninhabitable due to nuclear war or something.
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