Old programmers instinctively recognize powers of two, but a younger generation of higher level programmers often don’t. I was pleasantly surprised when my young son was considering 16 and 32 ‘neat’ numbers. It was due to Minecraft.
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Logarithms are hard
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Replacement rate is 2.1, so roughly 31 generations, but let’s try to avoid this!
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I found it amusing that my wife instinctively guessed ~1000 years.. which matches quite well if a generation averages 30 years the coming 1000 years. and she is definitely no programmer :-)
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Casey maybe you should teach powers of two in Star Code Galaxy.https://starcodegalaxy.com/
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To all the people who did not understand: we are 7.674 billion people, 2 ppl to have a kid so 3.937 billion, now how many times do you need to multiply 2 * 2 to have 3.937? It will be aprox 31-32 times.
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Didn't OP say the end state was a population of 1, not half the current population?
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Captain Pedantic here. If everyone has one child then a couple will have two, assuming an even number of people and everyone is coupled, no population decline. Pedantic out.
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To cap. Pedantic : but then the mother's had 2 children. Which would break the idea. Each child has exactly 2 parents.
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2^10 is roughly a thousand 2^20 is roughly a million 2^30 is roughly a billion 2^33 is roughly 8 billion, or the current human population If you half the population every generation, after 33 generations you're left with 1 person
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