Is it psychologically possible to believe a proposition in the absence of understanding the proposition? If not, do many of us continue to harbor beliefs "as tho" they are understood. While admitting that total understanding is, probably, not attainable, it appears to me that our mutually formed groups that purport to make and implement serious decisions stands as a possible threat to concerted action. I have classified these thoughts as somewhat metaphysical since, if totally psychological, the answer might be in the domain of science. Thank you for this site.
Jerry D. H.
A valuable paper on this topic, written by a psychologist, but with many discussions of Descartes's and Spinoza's views on these issues, is: Gilbert, Daniel T. (1991), "How Mental Systems Believe", American Psychologist 46(2) (February): 107-119 (online at http://www.wjh.harvard.edu/~dtg/Gillbert%20(How%20Mental%20Systems%20Believe).PDF) Briefly, Gilbert argues that (his interpretation of) Spinoza's view that believing is part of understanding and that one must believe a proposition before one can reject it is psychologically more valid than (his interpretation of) Descartes's view that believing or disbelieving a proposition must psychologically and logically come after understanding it.
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