No, it should be 'median', not 'mean'... but see the comment by cusco also.
Or he could just stay with 3.6, like I have, which works perfectly NOW.
Choose between a thousand words or so for each word, and you have a password you can actually remember, with just as much entropy as the standard 8-digit random nonsense. Something like "original horse tuesday" or "memorable yacht Tasmania" is also much easier to remember than "r3!xp20.".
If you want more strength, then increase the number of words. Four words aren't much harder to remember than three.
The moon is made of biscuit, therefore 1+1=2.
If the premise is false, then the conclusion *may* be false. Or true. Or neither.
Thousand and million have always been the same in the US and UK, and the British billion has just about died about in the UK, sadly -- 'billion' means 'thousand million' to us these days, just like it does for you.
It's a pity, as I did like the name 'milliard' for a thousand million (a billion used to be a million million), but I suppose the gain in consistency is worth it.
How about you start using metric measurements in return?
No, the movie was much better than the book, which was Heinlein's standard unreadable tripe. The movie on the other hand, while limited, had some interesting aspects, including the vision of a fascist-style world state. I've never been able to work out why people hate the movie so much.