Comment by mdemare

The strategy is fine - the problem is that people don't use a random number generator. This is how you get a 3-word password with 54-bits of complexity (on a mac with a recent ruby):

  ruby -e 'puts File.read("/usr/share/dict/words").lines.sample(3).map(&:chomp).join(" ")'

"applewife holographic intercommonage"

Easier to remember than `rand(254)` => 16495714355860079