Date:  Thu, 18 Dec 1997 20:02:06 -0500 (EST)
Message-Id: <199712190102.UAA25548@locke.ccil.org>
Reply-To: JORGE JOAQUIN LLAMBIAS <jorge@INTERMEDIA.COM.AR>
Sender: Lojban list <LOJBAN@CUVMB.BITNET>
From: JORGE JOAQUIN LLAMBIAS <jorge@INTERMEDIA.COM.AR>
Subject:      Re: xor questions (was Re: indirect Qs (was Re: On logji lojbo
              discu
X-To:         lojban <lojban@cuvmb.cc.columbia.edu>
To: John Cowan <cowan@LOCKE.CCIL.ORG>
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X-From-Space-Date: Thu Dec 18 20:02:09 1997
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And:
>> >  ta vasru ma poi ke`a na go tcati gi ckafi
>>
 >  ke`a na go tcati gi ckafi    F T T F
>
>If {ke`a na go tcati gi ckafi} means something else, what does
>it mean?

Sorry, you were right, that's what it means.

>What does {gonai} mean?

gonai A gi B = (not A) iff (B)

It's equivalent to: not (A iff B)

>>  An unhelpful answer like
>> {lo selpinxe} or {lo glare} would make the bridi true.
>
>If {ma} really does mean "replace this word with another than
>makes the bridi true", then this problem does exist. But I
>think the question means:
>
> Cause me to know for each of {tea xor coffee} whether the pot
>  contains it.
>
>If you can't say that with {ma}, then you could do it with {ko}.

I'm not sure I see how. But you could do it like this:

        ta vasru lo tcati onai lo ckafi i xu go'i lo tcati
        That contains either tea xor cofee. Is it tea?

I can't think of a simple question in Lojban that both asserts that
it does contain one of the two and simultaneously asks which one.

co'o mi'e xorxes