Living with the Dead

What is our purpose? We aim to make everything perfect yet perfection can never be achieved. In a future far away, gene modification is a neccesity, we don't need to worry about diseases, viruses, genetic problems when your genes can be changed to avoid these problems. A person is born with an abnormality in their genes, this person passes the gene test and lives amongst everyone. What people don't know is this man will put humanity on the brink of extinction. Additional notes: this is a work in progress and if you wish you may make stories based upon this one as long as you mention that this is based upon the work of this author. :)