ordinary logic

[/ˈɔːrdəneri ˈlɒdʒɪk/]
noun
lógica ordinária
1. Classical logic based on the law of non-contradiction and the law of excluded middle, following standard Aristotelian principles
In ordinary logic, a statement cannot be both true and false at the same time.
Na lógica ordinária, uma proposição não pode ser verdadeira e falsa simultaneamente.
2. Conventional reasoning and commonsense logic as opposed to specialized or non-classical logical systems
Ordinary logic suggests that if all men are mortal and Socrates is a man, then Socrates is mortal.
A lógica ordinária sugere que se todos os homens são mortais e Sócrates é um homem, então Sócrates é mortal.
3. Everyday logical thinking without formal symbolic representation or advanced mathematical frameworks
By ordinary logic, you need to finish your homework before going out to play.
Pela lógica ordinária, você precisa terminar a lição de casa antes de sair para brincar.
This term is primarily used in academic philosophy, mathematics, and computer science contexts. In both Brazilian and American educational systems, it refers to the foundational logical principles taught in introductory courses. It is contrasted with non-classical logics in advanced philosophical discussions. The term emphasizes the 'normal' or 'standard' nature of classical logic as opposed to specialized systems developed for specific applications.
Synonyms / Sinônimos
classical logicstandard logicAristotelian logiccommonsense logicconventional logic
Antonyms / Antônimos
fuzzy logicnon-classical logicparaconsistent logicintuitionistic logicmodal logic

Regional Variations

General Brazilian Portuguese
lógica ordinária
Standard academic and philosophical usage
General Portuguese
lógica ordinária
Same as Brazilian Portuguese; used in academic contexts
Formal/Academic contexts
lógica clássica
More commonly used terminology in academic philosophy

Related Words

formal logicsymbolic logicpropositional logicpredicate logicsyllogismlaw of non-contradictionlaw of excluded middleAristotle

Related Idioms & Phrases

use ordinary logic
according to ordinary logic
by ordinary logic
ordinary logic would suggest
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