On 21 September 2013 12:15, meekerdb <meeke...@verizon.net> wrote:

>  On 9/20/2013 3:53 PM, LizR wrote:
>  On 21 September 2013 05:48, meekerdb <meeke...@verizon.net> wrote:
>>  On 9/20/2013 9:53 AM, Bruno Marchal wrote:
>> Note also that Truth, by definition cannot be Popperian: it is not
>> falsifiable, of course. That's a common point with consciousness
>> "here-and-now", which is not falsifiable nor doubtable, yet true (except
>> for the zombies of course). OK?
>>  I think that is too quick.  First, what Popper meant by falsifiable was
>> that there be a test of a theory which we can conceive as having an outcome
>> contrary to its prediction.  Of course he knew that if the theory were
>> correct the outcome couldn't falisify it.  The point was that we could
>> only learn something if we didn't already know the answer.
>> Second, that there is a conscious thought may be indubitable WHILE the
>> thought, "There is a conscious thought." is present.  But it doesn't follow
>> that the content of a conscious thought is indubitable.  The content might
>> be, "There is a flying pink elephant in my room."  which is both dubitable
>> and almost certainly false.  And if the thought is, "I had a conscious
>> thought." that too is dubitable.
>>  The contents of consciousness are doubtable, of course, there might be
> a malicious demon or the Matrix or my addled senses or fallible memory
> involved. What isn't doubtable is the fact that I am conscious of them - at
> the time that I am conscious of them
> Right.  The only indubitable thought you can have is, "There's a
> thought".  You can't doubt any other thought, like, "I see red.", because
> doubting is a thought and you can't think two different conscious thoughts
> at the same time.  You can't think "I see red." AND "There is doubt this a
> thought." at the same time.  You can have the thought, "There is doubt that
> this is a thought.", and your thought would be false.

Yes, sorry, I expressed that a little colloquially. I wasn't intending to
assume the existence of an "I" - merely of consciousness. I think (!) one
could be wrong about having a thought (maybe someone else had the thought
and it only appears to be "mine" - or maybe there is only one cosmic
consciousness time-sharing between brains, etc) - but one (or whatever)
couldn't be wrong about being conscious of the thought at the time at which
one (or whatever) was conscious of the thought.

  - at least I can't see how that can be doubted. (This is hardly original
of course - Decartes reached the same conclusion about 500 years ago).

 Descarte assumed that there was an "I" having the thought and assumed it
> proved the existence of "I".

Yes, sure, I wasn't saying I accept everything Descartes said (stuff about
the pineal gland, I seem to recall, is probably dubious).

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