Dan wrote:
> Wow,
> 
> I must be confusing this with any/all is/isn't.  In various software
> (mail scripts, iTunes smart playlists, etc):
> 
>       any IS IS IS IS
> 
>       equals
> 
>       all NOT NOT NOT NOT

Exactly backwards.

any(@criteria) = not all(not @criteria)

Consider

Lifeboat1-has-a-seat OR
Lifeboat2-has-a-seat OR
...
LifeboatN-has-a-seat

vs.

Lifeboat1-is-full AND
Lifeboat2-is-full AND
...
LifeboatN-is-full

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