In the following example provided by SEOP, Kai is said to believe a proposition:
for example, when Kai reads that astronomers no longer classify Pluto as a planet, he acquires a new belief (in this case, the belief that astronomers no longer classify Pluto as a planet).
However is this indeed the belief he involuntarily acquires? Would he not instead (from reading said proposition) "believe that he perceives/read that astronomers no longer classify Pluto as a planet."? Then of course he involuntarily acquires the belief that "he percieves that he percieves ..." and it infinitely regresses hereon.
So can one only believe in perceptions of propositions, perceptions of beliefs of perceptions, but not propositions alone? (In a non-doxastic venturing manner of course)