Logic / Unit 7 Logic 340 short lesson, about 20 seconds
Method of Residues
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The idea
Subtract the parts of an effect explained by known causes; attribute the remainder to the remaining factor.
In practice
The truck weighs in loaded; deduct the known vehicle weight; the residue is cargo.
Where people slip
Only as good as the inventory of known causes. A missing cause reappears as a phantom residue — this is how planets and errors both get discovered.
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