[lit-ideas] Re: The de-islamization of Europe

  • From: Ursula Stange <Ursula@xxxxxxxxxx>
  • To: lit-ideas@xxxxxxxxxxxxx
  • Date: Sun, 21 Jan 2007 19:23:05 -0500

Perhaps we should be embarrassed for you, Lawrence. A deductive syllogism NEVER goes beyond its premises. The conclusion is always only a setting out of the premises. Deduction never gets you new knowledge. It merely clarifies what is already contained in the premises. For new knowledge you need induction -- but induction sacrifices certainty.


Andreas was pointing out that you committed the error of four terms. A proper syllogism can have only three terms (major, minor and middle). If you use a word twice in your syllogism but it doesn't have the same meaning both times, you have added a fourth term and, thus, committed a formal fallacy.

US in Canada

Lawrence Helm wrote:

I was embarrassed for you, Andreas. What you provided was in the form of a Syllogism but it wasn’t one. It wasn’t an argument. It is like saying that Saddam had brown hair and a mustache; therefore he was a brown-haired mustachioed individual. The term “therefore” implies a conclusion drawn from premises. But no conclusion is called for because brown-haired mustachioed doesn’t go beyond brown-haired and having a mustache. You could say “in other words” for what you have in the form of a conclusion is synonymous with what you have in the form of premises.


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