First heard this from a friend in 7 th grade . Two weeks laterHim What ' s worse than finding a worm in your appleMe What ? . the Holocaust ? H Yea but what ' s worse than that ? M . Him 6 million jews <| sep |> Arguments are premises followed by logical statements leading to a conclusion . There are plenty of valid arguments with incorrect conclusions . This is because the premises are wrong . In computer science , this is referred to as GIGO . Garbage in , garbage out . No matter how useful a computer program , if the input isn ' t valid , the output won ' t be valid . So , how do we ensure the premises are correct ? With evidence . If my premise to some argument is the world is roughly spherical , then it takes good evidence to show the world is roughly spherical . Fortunately , we have plenty of this , and can indeed show this to be an accurate premise . Most apologetics fail right here , right from the get go , because they use premises that are not supported by evidence , thus cannot be relied upon to be true .