Re: Ada Lovelace: others & forerunners

"hibbsa-/[email protected] [Fabric-of-Reality]" <[email protected]> 26 Oct 2015 10:00:04 -0700
Newsgroups gmane.science.physics.fabric-of-reality
Message-ID <[email protected]>
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      <p>&gt;---In [email protected], &lt;marchal@...&gt; w=
rote :<br>
<br>
&gt;On 14 Oct 2015, at 16:21, hibbsa@... mailto:hibbsa@... <br>
&gt;[Fabric-of-Reality] wrote:<br>
<br>
&gt;&gt;---In [email protected] <br>
&gt;&gt;mailto:[email protected], &lt;marchal@...&gt; wrote=
 :<br>
 <br>
&gt;&gt; On 09 Oct 2015, at 23:55, hibbsa@... mailto:hibbsa@ mailto:hibbsa@=
...<br>
&gt;&gt;[Fabric-of-Reality] wrote:<br>
 <br>
&gt;&gt; &gt;---In [email protected] <br>
&gt;&gt;&gt;mailto:[email protected] mailto:<br>
&gt;&gt;&gt;[email protected] mailto:Fabric-of-Reality@yaho=
ogroups.com, <br>
&gt;&gt;&gt;&lt;marchal@...&gt; wrote :<br>
 <br>
&gt;&gt;&gt;&gt;On 24 Sep 2015, at 13:33, hibbsa@... <br>
&gt;&gt;&gt;&gt;mailto:hibbsa@ mailto:hibbsa@ mailto:hibbsa@ mailto:hibbsa@=
... <br>
&gt;&gt;&gt;&gt;[Fabric-of-Reality] wrote:<br>
 <br>
&gt;&gt;&gt;regarding Ada Lovelace contributions to computing, <br>
&gt;&gt;&gt;David Deutsch tweets https://twitter.com/ <br>
&gt;&gt;&gt;https://twitter.com/ https://twitter.com/ https://twitter.com/<=
br>
&gt;&gt;&gt;DavidDeutschOxf/status/644977353651785730:<br>
 <br>
 <br>
&gt;&gt;&gt;&quot;ProfBrianCox @FryRsquared Fascinating. It convinced <br>
&gt;&gt;&gt;me that I was wrong: Babbage never really got universality. <br=
>
&gt;&gt;&gt;Lovelace totally did.&quot;<br>
 <br>
 <br>
&gt;&gt;&gt;Hmm... I have a little french book from 1911 by <br>
&gt;&gt;&gt;Jacques Lafitte which gave me indirect evidence<br>
&gt;&gt;&gt; that Babbage did got the &quot;universality&quot; insight<br>
&gt;&gt;&gt; (for &gt;computations). he got it not from his machine(s),<br>
&gt;&gt;&gt; but from the language he invented to describe the<br>
&gt;&gt;&gt; machine, and he realized that such a language is <br>
&gt;&gt;&gt;as powerfull than his machine.<br>
&gt;&gt;&gt; I have evidence that Ada invented programming <br>
&gt;&gt;&gt;and subroutine, but I am not sure she get the<br>
&gt;&gt;&gt; universality I will take a look (when I have more time).<br>
 <br>
&gt;&gt; Yes well....having seen the documentary I spent a<br>
&gt;&gt;little time digging out some details (actually all I did <br>
&gt;&gt;was visit (the site/blog of) some trusted historians of science). <=
br>
&gt;&gt;Apparently all Ada Lovelace did was publish a single<br>
&gt;&gt;paper, in which she performed a translation to English <br>
&gt;&gt;of a lecture given by or for Babbage. She added &#39;poetic <br>
&gt;&gt;annotations&#39; on what one might do with the analytical <br>
&gt;&gt;engine. Which was entirely Babbage&#39;s&#39; work. Another<br>
&gt;&gt;point was that not only was it absolute bullshit that <br>
&gt;&gt;Lovelace inspired or influenced at all the first computer, <br>
&gt;&gt;but that it&#39;s not straight forwarder that the analytical <br>
&gt;&gt;machine did. <br>
 <br>
&gt;&gt;Hi Hibbsa. What you describe is the usual opinion. <br>
&gt;&gt;But the book by Laffite expalins that when creating a <br>
&gt;&gt;lnague to describe the plan of he machine, Babbage <br>
&gt;&gt;eventually realized that the language for the plan <br>
&gt;&gt;was as much a discovery than its machine, and that <br>
&gt;&gt;he felt frustrated not being able to communicate that <br>
&gt;&gt;discovery. It means that he undertood that his language <br>
&gt;&gt;was a universal machine too, in (a posteriroi) the <br>
&gt;&gt;mathematical sense which he did not intent to make <br>
&gt;&gt;precise. Now, I have not seen that language, but I am<br>
&gt;&gt;open to the idea that Babbage got the &quot;tilt&quot; of the &quot=
;Turing <br>
&gt;&gt;universality&quot;. About ADA, my reading is that she invented<br>
&gt;&gt;the notion of subroutine, and the practice of programming, <br>
&gt;&gt;which demands also some intuiotion of that universality. <br>
&gt;&gt;With Babbage feeling about its language, the discovery is<br>
&gt;&gt; made more explicit. <br>
&gt;&gt; Today we know that some diophantine polynomial relation <br>
&gt;&gt;are Turing universal. Universality grows &gt;up at the very <br>
&gt;&gt;elementary part of the arithmetical reality. <br>
 <br>
&gt;Hi Bruno, hope you&#39;re well, <br>
&gt;Sure, on the face of it there&#39;s some compelling elements <br>
&gt;there. It&#39;s also significant - from my perspective - that <br>
&gt;Deutsch says he found it convincing. Because I know how <br>
&gt;much thinking he does about universality. <br>
&gt;Just to clarify, because it isn&#39;t clear whether that last <br>
&gt;post from me was expressing my own view or the view of some <br>
&gt;historians. Actually I was just paraphrasing the views I read. <br>
&gt;But...I do think historians have a lot to input into this sort <br>
&gt;of thing. <br>
&gt;The big question is really whether there is actual causality <br>
&gt;in the flow of certain historical events. No one would likely <br>
&gt;doubt that Lovelace anticipated aspects of computing. But the <br>
&gt;question of whether she changed the line of history is more involved. <=
br>
&gt;The difference is just that any number of people can be said <br>
&gt;in hindsight to have anticipated. That number is really directly <br>
&gt;proportional to the detail of history that one is aware. Whereas <br>
&gt;to be in the line of causality is much more constrained. So a much <br>
&gt;higher accolade. <br>
<br>
&gt;Hi Hibbsa,<br>
 <br>
<br>
&gt;What is interesting is that G=C3=B6del missed Church&#39;s thesis, <br>
&gt;and disbelieve it until reading Turing&#39;s paper. <br>
&gt;Church itself did not really grasp it as much as people <br>
&gt;like Emil Post, or Stephen Kleene, or the philosopher <br>
&gt;Judson Webb, who wrote a book showing how the classical <br>
&gt;machine already defeat Lucas-Pensore type of argument.<br>
<br>
Your earlier very interesting reply to David Deutsch touched on <br>
this matter. It&#39;s a period and subject into which I am lately <br>
more curious. For example, I know that Einstein spent a lot of<br>
his time while visiting, walking about with Godel. Naively I <br>
do wonder what they were talking about, and given it was over <br>
that period Einstein was struggling with &#39;spooky action at a <br>
distance&#39;, whether he was playing around with &#39;incompleteness&#39; =
<br>
and &#39;uncertainty&#39; with a view to a possible relation. And if <br>
he was, does that mean he was actually looking for an abstract <br>
&quot;meta&quot; explanation. No one else was doing that...no one else went=
<br>
there at that time, I don&#39;t think. Whatta guy :O)<br>
<br>
I&#39;d like to be able to say something directly relevant to your <br>
point, but I&#39;m out of my depth for now, I&#39;m afraid.<br>
 <br>
<br>
&gt;Deustch seems to believe in a notion of physical universality, <br>
&gt;in a stronger sense: the existence of a physical machine able <br>
&gt;to emulate all physical systems in polynomial time. To me, <br>
&gt;this is an open problem. One type of universal system would <br>
&gt;won in the statistics of all computations, and would have <br>
&gt;that property. It is quite plausible, but it is still an <br>
&gt;open problem to me, or in arithmetic (such problems can <br>
&gt;be translated in arithmetic, or in arithmetical terms <br>
&gt;(involving possible quite complex set of numbers, like <br>
&gt;arithmetical truth). The fact that the observable of the <br>
&gt;Turing machine, as I define them, have a natural quantization <br>
&gt;in arithmetic is just a promise toward such quantum machine. <br>
&gt;Empirically, the evidences are quite strong, no doubt.<br>
<br>
I actually don&#39;t think physical sciences would have come down <br>
from the trees in the first place had there been a dogmatic <br>
attachment to things as they first appear to be, or not one <br>
that was conscious and deliberate. <br>
<br>
The unconscious &#39;bias&#39; type flavour is legitimate and should<br>
more attention and/or a better standard of attention IMHO. But <br>
attributing that sort of thing to individuals is not something <br>
that I would personally want to do. It&#39;s also a little <br>
self-defeating because doing so presumably entails giving oneself <br>
a clean bill of health on those same terms, to be fit to examine <br>
others without fear of personal bias. <br>
<br>
&gt;Best,<br>
 <br>
<br>
&gt;Bruno<br>
<br>
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