The rationalism-empiricism philosophical debate is somewhat dead. I see no problem in using “rationalism” to mean LW rationalism. “Rationality” (1989) by Rescher defines rationality in the way LW uses the word, but doesn’t use “rationalism”, ostensibly because of the risk of confusion with the rationalism-empiricism debate. Neither LW nor average people are subject to similar limitations as the academic Rescher, so I think it is prudent to overwrite the meaning of the word “rationalism” now.
Maybe “rationalism” used to mean “rationalism in the rationalism-empiricsm debate”, but the concept of “rationality” has become very important during the past century, and that “rationality” means the LW type rationality. Yet, “rationality” is only a method. What LW clearly advocates is that this method is somehow the best, the only right method, the only method, a superior method, or a method that ought to be used. Hence, LW is somewhat founded on a prescriptive belief that “rationality” is a good method. It is very reasonable to call such a belief “rationalism”, as someone without belief in the superiority of rationality could still use rationality without being a rationalist.
The rationalism-empiricism philosophical debate is somewhat dead. I see no problem in using “rationalism” to mean LW rationalism. “Rationality” (1989) by Rescher defines rationality in the way LW uses the word, but doesn’t use “rationalism”, ostensibly because of the risk of confusion with the rationalism-empiricism debate. Neither LW nor average people are subject to similar limitations as the academic Rescher, so I think it is prudent to overwrite the meaning of the word “rationalism” now.
Maybe “rationalism” used to mean “rationalism in the rationalism-empiricsm debate”, but the concept of “rationality” has become very important during the past century, and that “rationality” means the LW type rationality. Yet, “rationality” is only a method. What LW clearly advocates is that this method is somehow the best, the only right method, the only method, a superior method, or a method that ought to be used. Hence, LW is somewhat founded on a prescriptive belief that “rationality” is a good method. It is very reasonable to call such a belief “rationalism”, as someone without belief in the superiority of rationality could still use rationality without being a rationalist.