Choose two

• Good
• Cheap
• Fast

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• Omniscient
• Omnipotent
• Omnibenevolent

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• On spec
• On budget
• On time

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• good grades
• social life
• sleep

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• having the time
• having the skills
• having the resources

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• easy to use
• non-proprietary
• secure

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• power
• understanding
• control

(Kelly's First Law)