>I've found that the best way to improve my mood over a "logic" puzzle
>in any piece of fiction is to sit down with Mates' Elementary
>Logic and do formal proofs until one of the following happens to
>my head:
>3) #56 in Chapter 6: Tautologous Sentences causes neural
>shutdown... again.

Okay... what's #56? (Asks the man who doesn't have this particular book...)

-- Bob
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"Shinji. Same name as the master key -- well done, Ikari. Shinji can't be copied. Splendid plan." -- Tabris, in Tenshi Muyo! Rei-o-ohki