logic
/ˈlɒdʒɪk/ (bre, ipa) · /ˈlɑːdʒɪk/ (ame, ipa) · /ˈlä-jik/ (ame, mw)
logic — noun
1. the set of reasons or the way of thinking that makes a particular action, decisi
the set of reasons or the way of thinking that makes a particular action, decision, or explanation seem sensible and understandable
Elena could not understand the logic of her friend's decision to quit a well-paid job.
logic of [someone's] decision
There is no logic in spending your whole salary on things you never use.
logic in [doing something] — pattern for evaluating actions
By the same logic, if the cheaper model works well, the expensive one must be even better.
The logic of the game was simple — collect the most items before the clock runs out.
- reasoning
the same sense of using reason, but 'reasoning' focuses on the mental process, while 'logic' focuses on the structure of the argument
- rationale
more formal; refers to the underlying reasons for a decision or policy, often in business or academic contexts
- sense
more informal; 'it makes sense' is a common equivalent for 'there is logic in it'
- justification
focuses on the act of showing something to be right or reasonable, often after the fact
- illogicality
the quality of being without reason or sense
文法句型
logic + of/in/behind + noun phrase
用法筆記
Often used with prepositions 'of', 'in', or 'behind' to explain why someone thinks or acts in a certain way. Common in both everyday conversation and formal writing.
常見錯誤
2. the study of the rules and methods that people use to reach correct conclusions
the study of the rules and methods that people use to reach correct conclusions from given facts or statements
Aristotle is often called the father of formal logic for his early work on how people reason.
formal logic — academic discipline
In her logic class, Ayana learned how to test whether the premises of an argument truly support its conclusion.
logic class — learning formal reasoning skills in an academic setting
Reema took a course in symbolic logic as part of her mathematics degree.
Logic is a required subject for students who want to study philosophy at most European universities.
文法句型
logic as a field of study
用法筆記
In this sense, 'logic' is an academic subject with sub-fields such as formal logic, symbolic logic, and predicate logic. It is a count noun only in specialised contexts ('the logics of different philosophical systems').
常見錯誤
3. the set of rules and electronic arrangements inside a computer or machine that c
the set of rules and electronic arrangements inside a computer or machine that control how it processes information and performs tasks
A logic gate is a simple electronic circuit that makes a decision based on two or more input signals.
logic gate — basic computing unit
The new processor uses advanced logic to distribute power between the different parts of the phone.
The engineer traced the error to a fault in the logic of the control program.
The test showed that the logic of the security system was unable to detect certain types of attacks.
- circuitry
refers to the physical electronic components; more hardware-focused
- computational rules
more explicit but less common in everyday tech writing
文法句型
logic + noun (attributive use)
the logic of + noun phrase
用法筆記
In computing, 'logic' refers both to the physical arrangement of electronic parts (hardware logic) and to the rules written in code (software logic). Often used in compound nouns such as 'logic gate', 'logic board', and 'logic circuit'.