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From: "Chad R. Meiners" <crmeiners@hotmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Turing-undecidable languages (OT)
Date: Wed, 8 May 2002 13:18:25 -0400
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message
news:ionhduku9trnt8pdm11ovutkp7g8jb0bjd@4ax.com...
> Surely but only if Y would do no I/O and thus have no connection to
> some external sources of knowledge. Consider a program that insolently
> asks the operator, "hey, maybe you know the answer"? (:-))

How would that be different from using an oracle?  It is clear that Turing
Machines will oracles can solve the halting problem.  The problem of course
is building the oracle.