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Orchid XP v8 wrote:
> Deeply awesome? Not really, no.
I thought it was awesome that it actually reads the tape with a camera
instead of cheating and storing anything in actual memory, for one.
> It operates far, far too slowly to watch it do anything useful.
I think "TM" and "useful" aren't really intended to go together.
> It's completely opaque why it writes the symbol it does.
I think the LCD display he isn't showing you in the videos covers that.
He also seems to be confused when he says it can compute anything
computable. A Turing machine is a definition of computability, not a result.
There are clearly all kinds of things a TM can't compute, and certainly
things a one-tape TM can't compute. We disregard those sorts of things
*because* Turing defined computability in terms of TMs.
It's like saying passing the Turing test proves you're intelligent. No, the
Turing test is a definition of intelligence, and if you don't accept that
definition, the test itself is meaningless. You find that 90% of the
arguments about things like the Chinese Room are simply arguments that the
Turing test isn't a good definition.
--
Darren New, San Diego CA, USA (PST)
Yes, we're traveling togeher,
but to different destinations.
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