have you ever heard an lsat prepbook describe a negative sufficient condition as a "denial of the antecedent" or an illegal negation described as "affirmation of the consequent"? Ever heard a book mention the latin modus tollens? ponens?
i have not. ever.
the lsat prep books seem to give these concepts different names and designations. However, as i got more interested in conditional logic and formal logic concepts (as a result of lsat studying), i stumbled upon an old book called "A System of Logic" by John Stuart Mill (1843). Mill's book seems to take a look at LSAT logic concepts (provided by the lsat prepbooks ) in a much more formal way, giving the concepts more complicated names, introducing different symbols for propositional statements etc.
my question is this : do the lsat prep books SIMPLIFY mill's book? or is mill's book a more THOROUGH version of the lsat prepbooks? furthermore, could mill's book be used as a complete substitute to some of the lsat prepbooks, helping students save money on prepbooks and ultimately providing a better logical foundation than the prepbooks could provide anyway?
let me know what you think, thanks.