I have read alot of scifi, both good and bad, but PKD stands apart not in competition but as his own category. Not in a literary sense but by practicing what on

I have read alot of scifi, both good and bad, but PKD stands apart not in competition but as his own category. Not in a literary sense but by practicing what one might call therapeutic philosophy that aims to sooth the lack of answers to eternal questions. Especially Man in the High Castle where he explores alternate "nearby" realities, our ability to sense them and in what sense we have agency to shape our destiny.