From the Common Sense Problem Page

Physical Reasoning

Linked Objects

Formally characterize the structure of a linked chain, and infer (a) that pulling on one end will cause the whole chain to follow; (b) that the chain is very flexible; (c) that cutting one link will give two shorter chains and that linking two chains together end to end gives a longer chain.

Contributed by Ernie Davis (, New York University, U.S.A. (18th September 1997)

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