Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!udel!haven.umd.edu!socrates.umd.edu!socrates!rockwell From: rockwell@socrates.umd.edu (Raul Rockwell) Newsgroups: comp.lang.misc Subject: Re: The Halting Problem is _not_ solvable on real com Message-ID: Date: 11 May 91 01:52:04 GMT References: <2990@optima.cs.arizona.edu> <1991May10.155454.2239@maths.nott.ac.uk> <3125@cirrusl.UUCP> <3069@optima.cs.arizona.edu> Sender: rockwell@socrates.umd.edu (Raul Rockwell) Organization: Traveller Lines: 17 In-Reply-To: kwalker@cs.arizona.edu's message of 10 May 91 22: 56:01 GMT Kenneth Walker: Is there any hope (in a theoretical sense) of a finite state machine computing interesting properties of an arbitrary finite state machine of its own size? I don't think this is an interesting question. :-) An interesting question would be: what properties should a computation device have such that most practical programs can be determined to halt. This is related to proving a program correct. I should note that functional languages seem to be rather promising in this regard. Raul Rockwell