9. Discontinuous Connections

If you were to test it and it reads OL open circuit, open load. That indicates that the fuse is blown or burnt and has no conductivity, no continuity, no connection.

—Mark Blocker, Expert Village, How to Do Fuse Visual and Continuity Tests1

The value of an information device or service increases when it is compatible with others. We’ve already talked about Metcalfe’s law of network effects (see Chapter 4, “Still Stupid After All These Years”), which states that the value of “compatible communicating devices” is roughly the square of the number of such devices. This effect has been validated in the telecommunications industry, where the value of the network grows with the number of phones or fax machines connected ...

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