Note that this book dates from 1977 and is not specifically focused in computer systems; while amazingly interesting and still relevant, this is not funded in mathematical or scientifical proofs, so take these corollaries as anecdotic statements. Nonetheless, many of these are extremely relevant today.
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Systems In General Work Poorly Or Not At All
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If Anything Can Go Wrong, It Will
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New Systems Mean New Problems
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Systems Tend To Expand To Fill The Known Universe
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Not Just Animals Behavior, But The Behavior Of Complex Systems Generally, Whether Living Or Nonliving, Is Unpredictable
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A Large System, Produced By Expanding The Dimensions Of A Smaller System, Does Not Behave Like The Smaller System
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Systems Tend To Oppose Their Own Proper Functions
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A System Is No Better Than Its Sensory Organs
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The Bigger The System, The Narrower And More Specialized The Interface With Individuals
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Pushing On The System Doesn't Help
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If A System Is Working, Leave It Alone. Don't Change Anything !
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A Complex System That Works Is Invariably Found To Have Evolved From A Simple System That Worked
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A Complex System Designed From Scratch Never Works And Cannot Be Made To Work. You Have To Start Over, Beginning With A Working Simple System
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Complex Systems Are Beyond Human Capacity To Evaluate
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A System Can Fail In An Infinite Number Of Ways
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The Crucial Variables Are Discovered By Accident
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Do It Without A System If You Can
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Loose Systems Last Longer And Function Better
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Complicated Systems Produce Complicated Responses (Not Solutions) To Problems



