If we cannot answer the annoying question of why there is something rather than nothing, perhaps we can at least answer why there is only something rather than everything. Perhaps existence is the default.
I still find it weird and unusual... does anybody adopt it outside of DD's circles? Is it a replacement for mathematical constructivism or an alternative or an extension?
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Does it seem to you different from "physics from the perspective of computer science" in a bad way? And not that I know of, but DD does contact other research labs I hearhttps://twitter.com/DavidDeutschOxf/status/961932159442407426 …
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No, it is just that I have not heard anybody but him use his terminology, and I also heard nobody shout that he is an evil charlatan. This means that either 100% of the people outside of his lab don't understand him (unlikely), or that he is solid but perhaps a little obscure.
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I remember googling that after you tweeted about it a few months ago, but I think DD would consider mathematical constructivism false: e.g. cantgotu environments are real bc they're needed in our best explanations of things.
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well, actually, cantgotu environments are argued to be logically possible with a diagonal argument. So I don't know, after reading the page I'm not sure I understand the view. But Deutsch once said in a tweet response to me that CT is not a theory of mathematics
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