This is about biological people, enhanced or otherwise, who are not conceived and gestated in the normal way. From "Frankenstein" through "Rossums Universal Robots," "Do Androids Dream of Electric Sheep" and "Friday" this has been the topic of many classic, and not so classic, science fiction stories. Why are authors drawn to this idea? Do they just want to exploit the emotional impact of the uncanny valley or is there any real word reason for artificial people?