I have a friend, who insists that shes being abducted by aliens. How do I convince this friend that aliens do not exist?
You would have a very difficult time trying to convince her of the non-existance of something that DOES IN FACT exist, there is too much overwhelming evidence that aliens do exist, and that abductions do occur thousands of times every year, this planet has been visited by aliens for many thousands of years, our government is fully aware of their presense here, and has actually made agreements with them that allow abductions of our citizens in trade for alien technology.