"How We Became Posthuman: Virtual Bodies in Cybernetics,
Literature, and Informatics"
by N. Katherine Hayles
http://www.amazon.com/exec/obidos/ASIN/0226321460/ref=ad_cy1
>From the moment researchers first noticed the similarities
between the workings of computers and the workings of the
mind, cybernetic technology has been forcing modern culture
to rethink what makes humans human. In "How We Became
Posthuman," N. Katherine Hayles, a professor of English at
UCLA, traces the course of this change by interweaving the
fascinating history of postwar cybernetics and robotics with
a deft reading of science fiction novels that brings to life
the dreams and nightmares those high-tech fields inspire.
Her sophisticated narrative makes a masterful--and highly
readable--contribution to the philosophy of identity in the
shadow of the digital.