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uncommon
(non-gibberish)
order unknown
caps common substitutions punctuation numeral
you can add a few more bits to
account for the fact that
this is only one of a few common formats

~28 bits of entropy.
2^28 = 3 days at
1000 geesses/sec
plausible attack on a weak remote web service.
yes. cracking a stolen hash is faster.
but it's not what the average user should worry about

difficulty to guess easy

was it trombone?
no. troubador. and one of the OS was a zero?

and there was some symbol...

difficulty to remember : hard

correct horse battery staple

four random common words

~44 bits of entropy
2^44 = 550 years at 1000 guesses/sec

difficulty to guess : hard

that's a battery staple.
correct!

difficulty to remember :
you'be already memorizeo it

through 20 years of effort, we've successfully trained
everyone to use passwords that are hard for humans
to remember, but easy for computers to guess