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tech / sci.logic / Re: Bob is a barber

Re: Bob is a barber

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From: polco...@gmail.com (olcott)
Newsgroups: comp.theory,sci.logic
Subject: Re: Bob is a barber
Date: Sun, 14 Jan 2024 09:40:48 -0600
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by: olcott - Sun, 14 Jan 2024 15:40 UTC

On 1/14/2024 1:30 AM, immibis wrote:
> On 1/13/24 18:11, olcott wrote:
>> On 1/13/2024 8:08 AM, immibis wrote:
>>> 1. Bob shaves every man who does not shave himself.
>>> 2. Does Bob shave himself?
>>>
>>> Point 1 is an impossible contradiction.
>>> Point 2 has a correct yes or no answer.
>>>
>>> That I am wrong when I say point 1 does not mean that point 2 has no
>>> correct answer.
>>
>>
>> Bob shaves everyONE who does not shave their selves.
>
> Incorrect.
>
>> Does Bob shave their self?
>
> Yes.
>
>>
>> You erred because female Bob need not shave herself.
>>
>
> Bob is male.
>

You did not specify that thus leaving a loophole.
Bob could be the nickname for Roberta.

--
Copyright 2023 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer

Re: Bob is a barber

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From: rich...@damon-family.org (Richard Damon)
Newsgroups: comp.theory,sci.logic
Subject: Re: Bob is a barber
Date: Sun, 14 Jan 2024 13:13:12 -0500
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by: Richard Damon - Sun, 14 Jan 2024 18:13 UTC

On 1/14/24 10:40 AM, olcott wrote:
> On 1/14/2024 1:30 AM, immibis wrote:
>> On 1/13/24 18:11, olcott wrote:
>>> On 1/13/2024 8:08 AM, immibis wrote:
>>>> 1. Bob shaves every man who does not shave himself.
>>>> 2. Does Bob shave himself?
>>>>
>>>> Point 1 is an impossible contradiction.
>>>> Point 2 has a correct yes or no answer.
>>>>
>>>> That I am wrong when I say point 1 does not mean that point 2 has no
>>>> correct answer.
>>>
>>>
>>> Bob shaves everyONE who does not shave their selves.
>>
>> Incorrect.
>>
>>> Does Bob shave their self?
>>
>> Yes.
>>
>>>
>>> You erred because female Bob need not shave herself.
>>>
>>
>> Bob is male.
>>
>
> You did not specify that thus leaving a loophole.
> Bob could be the nickname for Roberta.
>

But then did Roberta shave herself or not?

Most Women DO shave, just not their face, I guess you don't interact
with adult women.

Just like there are some Men who don't shave at all, but that is ignored
in the problem too.

Subject	Author
Re: Bob is a barber	olcott
Re: Bob is a barber	Richard Damon