<div class="gmail_quote">;)<div><br></div><div>Off topic:</div><div><br><div>Maybe the entire space time, the universe and his history, is isomorphic to a mathematical structure. <br><br></div><div><a href="http://space.mit.edu/home/tegmark/toe_frames.html" target="_blank">http://space.mit.edu/home/tegmark/toe_frames.html</a></div>
<div><br></div><div><a href="http://space.mit.edu/home/tegmark/toe_frames.html" target="_blank"></a><br><div class="gmail_quote">2009/10/1 Peter Verswyvelen <span dir="ltr"><<a href="mailto:bugfact@gmail.com" target="_blank">bugfact@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"><br><br><div class="gmail_quote"><div>On Thu, Oct 1, 2009 at 9:53 AM, Andrew Coppin <span dir="ltr"><<a href="mailto:andrewcoppin@btinternet.com" target="_blank">andrewcoppin@btinternet.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Sure. But what is a computer program? It's a *list of instructions* that tells a computer *how to do something*. And yet, the Haskell definition of sum looks more like a definition of what a sum is rather than an actual, usable procedure for *computing* that sum. (Of course, we know that it /is/ in fact executable... it just doesn't look it at first sight.)</div>
</blockquote><div><br></div></div><div>Is it? The list of instruction is just an abstraction layer built on top of purely physical process of electrons and transistors; I'm not sure how much imperativeness remains at this level? Not to mention the quantum mechanical processes that take place... And that are also just mathematical models... I mean, it really depends from which angle and at which detail you look at it, no?</div>
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