I would like to work your question in Security. There is now nor never will be in any short-term future a good-enough for the basic question. There may be accepted standards of knowledge for the risk-arena, but for every countermeasure there are thoughtful, sometimes persistent people who will spend their life trying to do attacks when it would be simpler, cheaper and easier to just get a legitimate job.
How these people stay away from death by poverty is a challenging thought experiment, but I would read several books no matter what any one paticular book says.
"The differential equations that describe dynamic interactions of power generators are similar to that of the gravitational interplay among celestial bodies, which is chaotic in nature."
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