An Introduction to Modal Logic

4 Comments:

1. Tales of Modernity - All philosophy is a footnote to Plato (and Aristotle!) Says: June 25th, 2007 at 10:03 am

   [...] Guy presents An Introduction to Modal Logic commenting on his submission, “Plato and Aristotle have contributed many things to the [...]

2. Thad Says: July 10th, 2007 at 7:28 am

   If you like this comic you might also enjoy: http://www.thadguy.com/comic/an-introduction-to-unchallengable-statistics/172/

3. Babu Says: January 13th, 2008 at 11:36 pm

   Um, “it is possible that” does not entail “it is that”. Invalid.

4. james Says: September 7th, 2008 at 1:27 pm

   (3) does not follow from (1) and (2) and thus your attempt at discrediting modal logic is clearly fallacious. Given (1) and (2) you can only conclude that “it is possible that prince edward is the most common entity on prince edward island” but not that “prince edward is the most common entity on prince edward island.” and surely, being that we are not dealing with a necessary truth here, it is indeed possible that in some possible world prince edward is the most common entity on prince edward island, however based on prior knowledge from our actual world we know this is not the case.

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