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Modal Logic
Disciplines > Argument > Types of reasoning > Modal Logic Description | Example | Discussion | See also
DescriptionDescribe things in terms of possibility and necessity. Also explore how they intertwine. For possibility, do not state things in terms of absolute truth, but say how likely things may be. Use words like seldom, often, probable, possibly, could, unusual. For necessity, talk about how necessary something is. Thus use words like can, may, should, ought, must, have to. Talking about how true or necessary something is gives you more potential in arguments as you now have an analog continuity of alternatives, rather than the black-and-white binary decision of simply whether something is true or false, necessary or unnecessary. Example
DiscussionTraditional logic is based on extension, in that the truth of the logic is found within the supporting statements. Modal logic is based on intention, in that truth is where you find it, and that the reality of many situations is that it is impossible to determine exact truth. Thus:
Necessity and possibility have aspects of a Boolean relationship in that: It is not necessary that X is true = It is possible that X is not true It is not possible that X is true = It is necessary that X is not true The modalities of possibility and necessity are also known as alethic modalities. Deontic logic is the specific logic about duty, where necessity is has a moral quality to it. See also |
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| Home | Top | Quick Links | Settings | |
Main sections: | Disciplines | Techniques | Principles | Explanations | Theories | |
Other sections: | Blog! | Quotes | Guest articles | Analysis | Books | Help | |
More pages: | Contact | Caveat | About | Students | Webmasters | Awards | Guestbook | Feedback | Sitemap | Changes | |
Settings: | Computer layout | Mobile layout | Small font | Medium font | Large font | Translate | |
| Home | Top | Menu | Quick Links | |
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