"Doxastically closed" describes a person who is unwilling to change their (false) beliefs regardless of any arguments against it.

The term is used in Street Epistemology and goes back to Peter Boghossian’s "A Manual for Creating Atheists". His definition: “I use the term to mean that either a specific belief one holds, or that one’s entire belief system, is resistant to revision.”
Bob: "1+1=3"
Anthony: "Imagine an empty table. You put one cup on the table. Then you put another cup on the table. How many cups are on the table?"
Bob: "Two."
Anthony: "Putting down one cup and then another cup is '1 cup + 1 cup' and you correctly identified the result as '2 cups'. So you see: 1+1=2"
Bob: "No, 1+1=3"

Charlie (to Dan): "Bob sure is a *very* doxastically closed person."
by end一 May 26, 2021
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