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Memories of Kurt Gödel

206 点作者 danielam将近 8 年前

11 条评论

beautifulfreak将近 8 年前
It reminds me of this article in the New Yorker about Gödel&#x27;s and Einstein&#x27;s talks. <a href="http:&#x2F;&#x2F;www.newyorker.com&#x2F;magazine&#x2F;2005&#x2F;02&#x2F;28&#x2F;time-bandits-2" rel="nofollow">http:&#x2F;&#x2F;www.newyorker.com&#x2F;magazine&#x2F;2005&#x2F;02&#x2F;28&#x2F;time-bandits-2</a><p>&quot;Although other members of the institute found the gloomy logician baffling and unapproachable, Einstein told people that he went to his office &#x27;just to have the privilege of walking home with Kurt Gödel.&#x27;&quot;
yequalsx将近 8 年前
I know this post is aimed at laymen but this sentence is not correct.<p>&quot;A bit more precisely, the Incompleteness Theorem shows that human beings can never formulate a correct and complete description of the set of natural numbers, {0, 1, 2, 3, . . .}.&quot;<p>The second order Peano Axioms are categorical and thus, up to isomorphism, the only model for this axiom system are the Natural numbers {0, 1, 2, 3, ...}. This is a complete system. We can&#x27;t happen is a recursively enumerable axiomatic description of the Natural numbers that is complete.<p>Another way to get a complete description of the Natural numbers is to take the collection of all true statements of the Natural numbers and make that our axiomatic system. It&#x27;s just not a useful axiomatic system but it is a complete description of the Natural numbers.
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westoncb将近 8 年前
I&#x27;m surprised no one has mentioned anything about Rudy Rucker, whose blog this is from. Some credit him with authoring the first cyber punk novel, which was titled &#x27;Software.&#x27; It&#x27;s the first in his &#x27;Ware Tetralogy&#x27; (Software, Wetware, Realware, Freeware) which I&#x27;d certainly recommend checking out.
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vbuwivbiu将近 8 年前
“The illusion of the passage of time arises from the confusing of the given with the real. Passage of time arises because we think of occupying different realities. In fact, we occupy only different givens. There is only one reality.”<p>Is he saying that our brains exist over all time simultaneously but they &quot;give&quot; us a sequence of instants from which we perceive the illusion of passage of time ?
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cicero将近 8 年前
That&#x27;s a beautiful story. I&#x27;ve been fascinated by Gödel since I read <i>Gödel, Escher, Bach</i> by Douglas Hofstadter back in the 1980s. I&#x27;m not a mathematician, so I can&#x27;t plumb the depths of his work, but I gain a little more insight by reading articles like this one.
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mirimir将近 8 年前
So does Gödel&#x27;s incompleteness theorem apply to scientific knowledge? I mean, as I understand it, he proved that any useful logical system contains statements that can neither be proved true nor false. But does that apply to quantum mechanics, for example? Are there self-referential statements in QM?
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pge将近 8 年前
For further reading on Gödel, Rebecca Goldstein&#x27;s <i>Incompleteness</i> is a great book. It is a biography of Gödel but also places his work in the context of the philosophical debates of the time.
chx将近 8 年前
Godel&#x27;s incompleteness theorems are explored by many of Raymond Smullyan&#x27;s books in a way that an inquiring high school student can understand it.
galaxyLogic将近 8 年前
I wonder what he would have come up with had he had access to computers
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nis10将近 8 年前
Aghhh who the ... picked the acid background of this page? cool
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fundabulousrIII将近 8 年前
He was quite insane. Dopamine is a hell of a drug.