The Primary Factor — Michael Stone

Primary Factor is a science fiction novel about an android, sent across space to seek out a planet were the dominant life form is killing the planet. His mission is to save the planet from destruction by eradicating the threat. When he crashes on a primitive Earth the question arises, can he survive until these people advance enough to enable him to leave The discoveries he makes during his early time on Earth will change him forever, but will they be strong enough to prevent him from carrying out his mission when, thousands of years later, these people become a major threat to the planet. Will he leave in peace, or is his core programming so strong that the human race is doomed Or can a young computer hacker discover the secret and prevent our extinction