Very roughly how many water molecules would you guess there are in a single cell? Within a couple of orders of magnitude? I got it quite wrong.
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Apparently there are on the order of 10^8 protein molecules per cell, which sounds like an awful lot until you take the cube root, to get a few hundred, which seems plausible if you think of all the organelles, made of protein, that have to fit in there.
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You can simulate any number of classical atoms in polynomial time, and even with modern computer tech were a looooong way to simulating a full cell at atomisic levels of detail. Makes you realize how hard QM is with its exponential scaling in number of particles.
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Conversely it's often surprising how fast solving NP-hard problems is.
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Crazy academics :p. O(n^2) already puts "you gonna have to rethink this as soon as real data arrives" into the back of my mind.
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