Artificial Intelligence, Philosophy, Philosophy of mind, Wittgenstein

Reading Notes I: Tegmark and substrate independence

Tegmark (2017:67) writes “This substrate independence of computation implies that AI is possible: intelligence doesn’t require flesh, blood or carbon atoms.”. How should we read this? The background is that he argues that computation is independent of what we use for hardware and software and what is required is only that the matter we compute in fulfills som very simple conditions like sufficient stability (what would intelligence look like if it was based on gases rather than more solid matter, one could ask – remembering the gas giants in Bank’s novels, by the way – sufficiently large gases may be stable enough to support computation?). But what is more interesting here is the quick transition from computation to intelligence. Tegmark does not violate any of his own assumptions here – he is exceptionally clear about what he thinks intelligence is and builds on a Simonesque notion of attaining goals – but there still seems to be a lot of questions that could be asked about the move from computation to intelligence. The questions that this raises for me are the following: (i) Is computation the same as intelligence (i.e. is intelligence a kind of computation – and if it is not what is it then?) (ii) It is true that computation is substrate agnostic, but is not substrate independent. Without any substrate there can be no computing at all, so what does this substrate dependence mean for intelligence? Is it not possible that the nature of the matter used for…

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