Hyperscape 1 is an installation using 10 networked Mac Classics running Hypercard.

The HyperCard program simply creates a list of variables and passes this list as a single variable to each of the other computers. On receipt of a new set of variables the other macs then draw on the same information as the controller, but with a 1 in 10 chance of deciding not to.

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Interesting stuff. Wired is running an article about it.