In any given price estimate, final cost will exceed estimates by a factor of 2
		-- Financial General Shefields Corollaries n1
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All warranty and guarantee clauses become void upon payment of the final invoice
		-- Financial General Shefields Corollaries n2
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Interchangeable parts won't
		-- Mechanical General Shefields Corollaries n1
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The probability of a diagram or a specification being omitted from a shop manual is directly proportional to its importance
		-- Mechanical General Shefields Corollaries n2
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A dropped tool will land where it will cause the most damage; also known as the Law of Selective Gravity
		-- Mechanical General Shefields Corollaries n3
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The availability of a part is inversely proportional to the need for the part
		-- Mechanical General Shefields Corollaries n4
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Disassembly of a major component will invariably include a seized bolt
		-- Assembly General Shefields Corollaries n1
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Tolerances will accumulate unidirectionally towards maximum difficulty of assembly
		-- Assembly General Shefields Corollaries n2
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The necessity for correcting mistakes in assembly increases as the assembly approaches completion
		-- Assembly General Shefields Corollaries n3
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After assembly, it will always be observed that the gasket is on the bench
		-- Assembly General Shefields Corollaries n4
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A dropped nut will seek the least level of accessibility
		-- Assembly General Shefields Corollaries n5
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A screwdriver will always slip when in the proximity of painted surfaces--Law of Centrifugal Malfeasance
		-- Assembly General Shefields Corollaries n6
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Any line, wire, or cloth cut to length will be too short
		-- Dimensions General Shefields Corollaries n1
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Any rigid material cut to fit will be too long
		-- Dimensions General Shefields Corollaries n2
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Probability of failure of a component is inversely proportional to the ease of repair or replacement
		-- Operation General Shefields Corollaries n1
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An electrical component protected by a fuse will protect the fuse by blowing first
		-- Operation General Shefields Corollaries n2
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