Thursday, November 13, 2008


"There are basically three ways of judging sources of information.
One is internal evidence--does the author sound like a competent, well informed person who takes reasonable care to make sure that what he says is true?
A second is external evidence about the information--does it fit other things I have reason to believe are true?
A third is authority--do I have good reason to believe that the source of the information is reliable?"