When explaining the distinction between essential and accidental properties bachelors are often used. The idea of essential properties is this: The distinction between essential versus accidental properties has been characterized in various ways, but it is currently most commonly understood in modal terms along these lines: an essential property of an object is a property […]

It is the mark of an educated mind to be able to entertain a thought without accepting it. Indeed it is. But I cannot find a source for the quote. It is listed as unsourced on Wikiquote (which is a pretty good indication of it being a misquotation). A google search does not reveal a […]

piratefish I’m reading Irving Copi’s Introduction to Logic, very boring and not that well written, any suggestions? Just a college level book that gives a comprehensive intro to the topic. Thanks. kennethamy “Boring” is not a particularly apt criticism of a text. There are jazzier logic books out there, with bunches of cartoon and jokes […]

Some people sometimes mention that deduction conforms to the GIGO principle. I will here show that in a straightforward interpretation of that, it is false. “Garbage in, garbage out” is a metaphor or sorts. The mental image I form when I hear it is something like a huge machine that, when garbage is put into […]