I either enjoy books by Mr Dick, or they end up giving me a headache. File this one under 'headache'.

While there is something interesting going on here, the unrelenting paranoia soon becomes tiresome. The fact that much of the book amounts to muddled ramblings of a religious nature coupled with a haphazard political paranoia, it is hard to separate the work from the reality of the author's heavy amphetamine abuse and deteriorating mental state.

Give it a miss.