Earthlings as Beings of Harvested Consciousness

"It Came from Outer Space"
http://en.wikipedia.org/wiki/It_Came_From_Outer_Space

In this sci-fi thriller from 1953, aliens who crash-
landed on the earth intermingle with humans by controlling
them robotically, sort of like androids. Note the
thematic allusion:

"The film has been interpreted as a metaphorical refutation
of xenophobic attitudes and ideology of the Cold War."

With the advent of an intelligent designer, and "aliens"
who looked and acted similar to modern man, would this
sort of technology be within reach to "earthlings" as
space travelers?

If not, have some of us become, or are in the process of
becoming "earthlings as beings of harvested consciousness"?

American