Common knowledge revisited |
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| Institution: | 1. IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120-6099, U.S.A.;2. Department of Computer Science, Cornell University, Ithaca, NY 14853, U.S.A.;3. Faculty of Electrical Engineering, Technion-Israel. Institute of Technology, Haifa 32000, Israel;4. Department of Computer Science, Rice University, Houston, TX 77005-1892, U.S.A. |
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| Abstract: | We consider the common-knowledge paradox raised by Halpern and Moses: common knowledge is necessary for agreement and coordination, but common knowledge is unattainable in the real world because of temporal imprecision. We discuss two solutions to this paradox: - 1.(1) modeling the world with a coarser granularity, and
- 2.(2) relaxing the requirements for coordination.
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