Re: Are Computer able to think?

From	Paul Rubin <no.email@nospam.invalid>
Newsgroups	comp.lang.forth
Subject	Re: Are Computer able to think?
Date	2013-07-17 10:46 -0700
Organization	Nightsong/Fort GNOX
Message-ID	<7xhafthyfd.fsf@ruckus.brouhaha.com> (permalink)
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Hans Bezemer <the.beez.speaks@gmail.com> writes:
> In other words: if you're unable to balance your malloc/free calls (which
> occur much less frequent than putting things on the stack), you're
> completely unable to balance a stack.

It's not really similar.  The gc.html file in
  http://www.complang.tuwien.ac.at/forth/garbage-collection.zip
describes the issues rather concisely.  Items on the Forth stack are
just one cell, so if you pass one to some word that may want the value
later, it can just copy it.  The issue is that if it happens to be
a pointer to some larger object: how do you know when to free it?

> I'm sure that if I put my mind to it, I could implement that in Forth. 

I don't think that's feasible without making Forth much different.  For
example, if a shared_ptr is on top of the stack and you say DUP, the ref
count has to be incremented.  You'd have to put type info into every
object that the interpreter would have to inspect on every operation,
something like Lisp or I guess Factor.  It wouldn't really be Forth any
more.

> It's much like a poor mans garbage collection IMHO.

It's similar to how Python works.  One can make the case that GC is
preferable most of the time.

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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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