Shmuel wrote:

| Well, (*FAIL) is experimental, but what about (?!)?

and he has the right idea.  What is needed is a substantive
contradiction, one, say, of the logical form

¬(a |  ¬a)
a & ¬a

that is not so obvious that simple consistency checks catch it.

The merely improbable---Something akin to an SQL query of a personnel
data base that seeks bilingual Icelandic and Urdu speakers---is not
good enough because parochial.  Exxon chose its name in part because
the roman-alphabet sequence 'xx' is very rare in most natural
languages and transliterations, but it turned out to be common in
Maltese.

John Gilmore, Ashland, MA 01721 - USA

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