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I'm not sure the technical meaning of entropy in this context, but personally, I would offset the narrowing effect of "restrict to grammatical phrases" by addin

I'm not sure the technical meaning of entropy in this context, but personally, I would offset the narrowing effect of "restrict to grammatical phrases" by adding uncommon words. "Besotted ophthalmoscopes gambol indicatively" forms a coherent, if silly, word picture for me, so I think I can remember it. As far as possible combinations, my vague memories of linguistics 1001 include the idea that this is one of the essential properties of language: it has so many possible combinations, that every speaker is continually creating sentences that have never before been uttered. Unlike, say, honey bee dances, which are often repeated.

kragen 15y ago
> I'm not sure the technical meaning of entropy in this context Roughly, it's the logarithm (base 2) of the number of guesses that an optimal password guesser would have to guess in order to guess your password. It's a measure of how unknown your password is. > it has so many possible combinations, that every speaker is continually creating sentences that have never before been uttered. Yes, this is why all of the suggested alternatives like "choose a line from a popular song" are so much less secure.