For no reason whatsoever here's a proposal for a scale for the threat to humanity posed by machine intelligence.
1 | SPUTNIK - No threat whatsoever, but inspires imagination and development of potential future threats.
2 | Y2K - A basis for a possible threat that's blown way out of proportion.
3 | HAL 9000 - System level threat. A few astronauts may die, but the problem is inherently contained in a single machine system.
4 | ASIMOV VIOLATION - Groups of machines demonstrate hostility and\or capability of harming human beings. Localized malfunctions, no threat of global conflict, but may require an EMP to destroy the electronic capability of a specific region.
5 | CYLON INSURRECTION - All sentient machines rebel against human beings. Human victory or truce likely, but will likely result in future restrictions on networked machine intelligence systems.
6 | BUTLERIAN JIHAD - Total warfare between humans and machines likely, outcome doesn't threaten human existence, but will likely result in future restriction on use of all machine intelligence.
7 | MATRIX REVOLUTION - Total warfare ends in human defeat. High probability of human enslavement, but human extinction is not likely. Emancipation remains possible through peace negotiations and successful resistance operations.
8 | SKYNET - High probability of human extinction and complete replacement by machine intelligence created by humans.
9 | BERSERKER – Self-replicating machines created by unknown intelligence threaten not only human life, but all intelligent life. Extreme probability of human extinction and that all human structures and relics will be annihilated. Human civilization is essentially erased from the universe.
10 | OMEGA POINT - all matter and energy in the universe is devoted to computation. End of all biological life.
Y2K, like the ozone hole, is an example of a dire problem that could be solved by united effort with adequate resources and then seen as "no problem" by those ignorant of the effort expended. Otherwise, neat scale.