Re: Are Computer able to think?

From	Bernd Paysan <bernd.paysan@gmx.de>
Newsgroups	comp.lang.forth
Subject	Re: Are Computer able to think?
Date	2013-07-18 23:41 +0200
Organization	1&1 Internet AG
Message-ID	<ks9nej$41a$1@online.de> (permalink)
References	(1 earlier) <f22d4e4f-2747-4b50-a927-d61d1cfebdb6@googlegroups.com> <e2b1345d-6299-4fa2-9f6e-eac0982fe035@googlegroups.com> <28e9ad0f-175f-4012-80d5-390619d2ab46@googlegroups.com> <51e7d328$0$26893$e4fe514c@dreader37.news.xs4all.nl> <nfmdnYPI1MyIfXrMnZ2dnUVZ_rSdnZ2d@supernews.com>

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Andrew Haley wrote:

> There's a reason why academic quantum computing groups focus on
> pushing down decoherence and demonstrating entanglement in 2, 3, or 4
> qubits: because that way, at least you know that the qubits are
> qubits!"

Yes, but they would spent their money better by understanding why 
decoherence happens instead of pushing it down as unwanted side effect.  It 
is IMHO essential to understand decoherence to get it a) under control, and 
b) understand its impacts to the system in operation.

IMHO, decoherence is already explained quite well in the BCS-theory of 
superconduction (for the limited field of cooper pairs), and the broader 
result is that coherence can't work in an ever-changing environment, it 
needs stable condition (stable in so far that the information flow between 
the entangled particles and their environment is faster than that 
environment is changing).  This means that this is not "instantaneous", 
which is why the current academic quantum computers slow down with every 
qubit added, and this slow-down is inevitable, and depends on distance (so 
miniaturizing qubits is speeding things up).

It also makes clear that the ultimate promise of quantum computing, i.e. 
that you can solve difficult things essentially in an instant, will never 
come true.  It won't be instantly, it still will take time; time 
proportional to the big-O notation of the problem at hand.  If miniaturized 
well enough, it will be a hell lot faster than what we can do now, but it 
will not be a breakthrough that you can break cryptography in an instant 
that takes 10^100 years now to break.  It might be "only" 10^80 years or so.  
Which is still a tremendous achievement, though not one the NSA is hoping 
for ;-).

So I think the truth is at conflict with the wishful thinking which funds 
both academia and commercial research, and therefore, people will try to 
work around that conflict by not actually looking too close at these issues.  
Which is about the same reason why D-Wave does what they do.  Satisfy the 
funders.  Just even more extreme than academia.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

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Are Computer able to think? visualforth@rocketmail.com - 2013-07-12 06:18 -0700
  Re: Are Computer able to think? Alex McDonald <blog@rivadpm.com> - 2013-07-12 07:42 -0700
  Re: Are Computer able to think? Jason Damisch <jasondamisch@yahoo.com> - 2013-07-12 12:33 -0700
    Re: Are Computer able to think? Jason Damisch <jasondamisch@yahoo.com> - 2013-07-12 12:46 -0700
      Re: Are Computer able to think? Brad Eckert <hwfwguy@gmail.com> - 2013-07-12 14:28 -0700
        Re: Are Computer able to think? Jason Damisch <jasondamisch@yahoo.com> - 2013-07-12 14:50 -0700
          Re: Are Computer able to think? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-07-18 11:36 +0000
            Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-18 07:31 -0500
              Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-18 23:41 +0200
  Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-13 02:52 +0200
    Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-12 20:06 -0700
      Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-13 14:34 +0200
        Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-13 19:54 -0700
          Re: Are Computer able to think? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-07-14 11:32 +0000
            Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-14 11:46 -0700
          Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-14 21:57 -0700
    Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-12 20:44 -0700
      Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-13 14:37 +0200
  Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-12 20:08 -0700
  Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-13 01:44 -0500
    Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-13 22:25 +0200
  Re: Are Computer able to think? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-07-13 06:15 -0400
    Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-13 11:31 -0700
      Re: Are Computer able to think? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-07-13 19:31 -0400
        Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-13 18:17 -0700
          Re: Are Computer able to think? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-07-14 16:11 -0400
            Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-14 14:21 -0700
              Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-14 15:03 -0700
                Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-14 21:51 -0700
                Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-15 00:09 -0700
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-15 02:39 -0700
                Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-17 04:21 -0700
                Re: Are Computer able to think? "Elizabeth D. Rather" <erather@forth.com> - 2013-07-17 07:31 -1000
                Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-17 12:06 -0700
                Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-17 23:53 -0700
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-18 22:23 -0700
                Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-19 00:48 -0700
              Re: Are Computer able to think? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-07-14 18:22 -0400
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-14 15:44 -0700
                Re: Are Computer able to think? "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-07-15 21:00 -0400
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-16 03:43 -0500
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-16 23:24 -0700
                Re: Are Computer able to think? The Beez <the.beez.speaks@gmail.com> - 2013-07-16 07:24 -0700
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-16 23:41 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-16 19:16 -0700
                Re: Are Computer able to think? AKK <akk@nospam.org> - 2013-07-17 08:04 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-16 23:27 -0700
                Re: Are Computer able to think? "Elizabeth D. Rather" <erather@forth.com> - 2013-07-16 20:48 -1000
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-17 11:51 +0200
                Re: Are Computer able to think? Alex McDonald <blog@rivadpm.com> - 2013-07-17 04:49 -0700
                Re: Are Computer able to think? The Beez <the.beez.speaks@gmail.com> - 2013-07-18 07:15 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-18 11:59 -0500
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-18 21:56 +0200
                Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-18 23:45 +0200
                Re: Are Computer able to think? Alex McDonald <blog@rivadpm.com> - 2013-07-18 15:16 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-18 17:40 -0500
                Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-19 01:08 +0200
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-19 02:48 -0500
                Re: Are Computer able to think? Mark Wills <markrobertwills@yahoo.co.uk> - 2013-07-19 01:18 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-19 03:35 -0500
                Re: Are Computer able to think? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-07-22 09:50 +0000
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-18 17:32 -0500
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-19 19:28 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-19 10:51 -0700
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-20 00:34 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-19 23:08 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-20 05:49 -0500
                Re: Are Computer able to think? Jason Damisch <jasondamisch@yahoo.com> - 2013-07-20 06:21 -0700
                Re: Are Computer able to think? Brad Eckert <hwfwguy@gmail.com> - 2013-07-20 14:02 -0700
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-20 17:02 -0700
                Re: Are Computer able to think? visualforth@rocketmail.com - 2013-07-21 10:02 -0700
                Re: Are Computer able to think? Jason Damisch <jasondamisch@yahoo.com> - 2013-07-21 10:07 -0700
                Re: Are Computer able to think? Hannu Vuolasaho <hannu.vuolasaho@nospam.tut.fi.invalid> - 2013-07-21 19:23 +0000
                Re: Are Computer able to think? Lars Brinkhoff <lars.spam@nocrew.org> - 2013-07-20 10:07 +0200
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-19 18:16 -0500
                Re: Are Computer able to think? Alex McDonald <blog@rivadpm.com> - 2013-07-18 15:09 -0700
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-17 10:46 -0700
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-18 00:40 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-17 21:34 -0700
                Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-17 23:55 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-18 13:03 -0500
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-18 22:00 +0200
                Re: Are Computer able to think? The Beez <the.beez.speaks@gmail.com> - 2013-07-18 07:21 -0700
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-18 11:02 -0700
                Re: Are Computer able to think? Hans Bezemer <the.beez.speaks@gmail.com> - 2013-07-18 22:02 +0200
                Re: Are Computer able to think? Paul Rubin <no.email@nospam.invalid> - 2013-07-18 21:43 -0700
                Re: Are Computer able to think? Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-07-17 03:29 -0500
              Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-14 21:44 -0700
                Re: Are Computer able to think? Bernd Paysan <bernd.paysan@gmx.de> - 2013-07-15 16:45 +0200
                Re: Are Computer able to think? hughaguilar96@yahoo.com - 2013-07-15 20:32 -0700
  Re: Are Computer able to think? mentifex@myuw.net - 2013-07-14 11:52 -0700
  Re: Are Computer able to think? Mark Wills <markrobertwills@yahoo.co.uk> - 2013-07-17 05:24 -0700
  Re: Are Computer able to think? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-07-18 11:15 +0000
    Re: Are Computer able to think? Brad Eckert <hwfwguy@gmail.com> - 2013-07-18 11:33 -0700
  Re: Are Computer able to think? jim@rainbarrel.com - 2013-07-24 20:09 -0700
    Re: Are Computer able to think? m.a.m.hendrix@tue.nl - 2013-07-25 00:15 -0700
    Re: Are Computer able to think? Brad Eckert <hwfwguy@gmail.com> - 2013-07-25 08:38 -0700

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