review Do Androids Dream of Electric Sheep?

Review of Do Androids Dream of Electric Sheep? By Philip K. Dick

This is the book that inspired the movie Bladerunner.  It is far more philosophical as good science fiction is supposed to be and goes to explain why it is considered to be a modern classic of the genre.

The question is brought of what a life is worth and whether it is diminished if it is, in fact, manufactured.  The ability of empathy is what is used to judge between a human and an android and yet, there are humans who are incapable of empathy.  There are androids with more of a sense of empathy, at least towards their own kind.  They are simply a separate race who is considered to be less than the kind in power.

This brings into question whether the book was supposed to be a look at humanity in general.  Was it about bigotry? Was it about racism?  What was trying to be said?