A plan is made to fly from Glasgow to Moscow and is shown by circumscription to lead to the traveller arriving in Moscow. Then a fact about an unexpected obstacle---the traveller losing his ticket---is added without changing any of the previous facts, and the original plan can no longer be shown to work if it must take into account the new fact. However, an altered plan that includes buying a replacement ticket can now be shown to work. The formalism used is a modification of one developed by Vladimir Lifschitz, and I have been informed that the modification isn't correct, and I should go back to Lifschitz's original formalism. April 14,2001: I still haven't done it, so this article has to be regarded as tentative. I hope to fix the problems without going back to Lifschitz's formalism, which I find awkward.}.
|Keywords||No keywords specified (fix it)|
No categories specified
(categorize this paper)
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
The Unexpected Classic J. P. Sullivan: Martial, The Unexpected Classic: A Literary and Historical Study. Pp. Xxv + 388, 7 Maps. Cambridge: Cambridge University Press, 1991. £45. [REVIEW]Peter Howell - 1993 - The Classical Review 43 (02):275-278.
A Procedural Solution to the Unexpected Hanging and Sorites Paradoxes.SC Shapiro - 1998 - Mind 107 (428):751-762.
Book Review -- Vladimir Lifschitz, Ed., Formalizing Common Sense: Papers by John McCarthy. [REVIEW]Varol Akman - 1995 - Philosophical Explorations.
Added to index2009-01-28
Total downloads3 ( #704,312 of 2,177,974 )
Recent downloads (6 months)1 ( #317,205 of 2,177,974 )
How can I increase my downloads?