Bruce Schneier goes with 1.3 bits of entropy per character of general English text in Applied Cryptography. > Anything with genuinely high entropy is by defini

Bruce Schneier goes with 1.3 bits of entropy per character of general English text in Applied Cryptography. > Anything with genuinely high entropy is by definition difficult to remember. This wording bugs me a bit, but I'm not quite sure why. I think it has something to do with the time my friend's bank, which only issued random 4-digit PINs for their ATM cards, assigned my friend the PIN 4444. Theoretically, it was just as tough to guess as any other password, but it was really easy to remember.