Computer Non-criticality

Any device marked by physical safety ramifications for individuals other than the informed operator(s) and, if applicable, informed staff and/or passenger(s), and not principally known as a computer must, upon failure of an embedded computer, exhibit a non-catastrophic fallback behavior through mechanical or macroelectrical means, usually permitting safe immobilization/neutralization.   Primary examples are automobiles, airplanes, trains, traffic lights, and any system where hazardous (toxic, caustic, explosive, extremely hot or cold, extremely high or low pressure, infectious, or radioactive) substances or fast-moving, violent, or destructive mechanics (turbines, flywheels, pile drivers, etc.) are handled under computer control.

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This is a preliminary draft. Pending changes are in The To-Do List