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Single Idea 13706

[from 'Logic for Philosophy' by Theodore Sider, in 4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / c. System D ]

Full Idea

Deontic accessibility seems not to be reflexive (that it ought to be true doesn't make it true). One could argue that it is serial (that there is always a world where something is acceptable).

Gist of Idea

Intuitively, deontic accessibility seems not to be reflexive, but to be serial

Source

Theodore Sider (Logic for Philosophy [2010], 6.3.1)

Book Reference

Sider,Theodore: 'Logic for Philosophy' [OUP 2010], p.142

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