Schizoid twin brothers

Question

There are two identical twin brothers.

The first one is honest, but he lies in his schizophrenic situations.
The second one is well-known liar, but he tells the truth when he gets one of his pathologic seizures .

What kind of yes-no questions should you ask anyone of them to detect whether he is in his normal or in his irregular state?

$\begingroup$ There is a simpler way to determine if they tell the truth. $\endgroup$
– KSmarts
Feb 17, 2015 at 22:25 — KSmarts, Feb 17, 2015 at 22:25

user3453281 · Accepted Answer · 2015-02-17 22:26:09Z

5

do you always speak the truth when you are crazy?

"yes" indicates that they are currently crazy

I just realised that the opposite also works and might be simpler

do you lie on purpose?

"yes" indicates that they are currently crazy

answered Feb 17, 2015 at 21:50

user3453281

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$\begingroup$ there is a simpler and shorter question :D $\endgroup$
– Abr001am
Feb 17, 2015 at 21:56
$\begingroup$ I edited it, it's the same question but simpler. dunno how to make it more simple. $\endgroup$
– user3453281
Feb 17, 2015 at 22:21
$\begingroup$ you can ... "are you in your pathologic situation ?" $\endgroup$
– Abr001am
Feb 17, 2015 at 22:23
$\begingroup$ but this answer is accepted thu $\endgroup$
– Abr001am
Feb 17, 2015 at 22:23
1

$\begingroup$ @Abidare001 "are you in your pathological situation" would always be answered no by the honest twin and yes by the liar. It's a useful question, but not what is asked for here. $\endgroup$
– Callidus
Feb 19, 2015 at 1:36

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