07
Mar
10

A priori / A posteriori


The terms a priori (“prior to”) and a posteriori (“subsequent to”) are used in philosophy (epistemology) to distinguish two types of knowledge, justifications or arguments. A priori knowledge or justification is independent of experience (for example ‘All bachelors are unmarried’); a posteriori knowledge or justification is dependent on experience or empirical evidence (for example ‘Some bachelors are very happy’). A priori justification makes reference to experience; but the issue concerns how one knows the proposition or claim in question—what justifies or grounds one’s belief in it. Galen Strawson wrote that an a priori argument is one of which “you can see that it is true just lying on your couch. You don’t have to get up off your couch and go outside and examine the way things are in the physical world. You don’t have to do any science.”

Although definitions and use of the terms have varied in the history of philosophy, they have consistently labelled two separate epistemological notions. The intuitive distinction between a priori and a posteriori knowledge is best seen in examples. To borrow from Jerry Fodor (2004), take, for example, the proposition expressed by the sentence, “George V reigned from 1910 to 1936.” This is something (if true) that one must come to know a posteriori, because it expresses an empirical fact unknowable by reason alone. By contrast, consider the proposition, “If George V reigned at all, then he reigned for at least a day.” This is something that one knows a priori, because it expresses a statement that one can derive by reason alone.

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So what’s this blog about?

Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.

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