Re: CGI is killing sci-fi
In my opinion Dick's best book is A Scanner Darkly - which is magnificently paranoid and twisted. Also an excellent film.
Philip K. Dick did epic amounts of LSD and other psychotropic chemicals - as did many of the creative people of his generation (Maybe there should be a logartimic "Shulgin scale" to quantify what "a lot" is).
I think being smashed out of ones head during working hours, inspired quite a few of the more visually stunning / intriguing stories and for Philip K. Dick drugs definitely created many of those story lines exploring common difficulties in figuring out what objective reality is and who it applies to, and of course the general paranoia.