His common sense tells him that there is no reason why a dead man should be decisive for his existence today, and I agree with him. Once doctrinal teachings are detached from their historical realities, we have entered the arena of myth. And there is simply no good reason to prefer Christian myths over other myths or, for that matter, secular philosophies. The resurrection is only real for our lives today if it is a real event of history. A physical body did disappear from the tomb.
History shows there was a body there and it disappeared.
The enemies of Christ were never able to produce the body nor disprove the resurrection. The resurrection accounts are not presented in parabolic or symbolic language, but as hard fact. John 20 is full of what Greek grammarians call vivid historical present tenses to stress the historical reality of the Gospel message. First Corinthians 15 teaches us that Christ not only arose, but that He arose bodily. He possessed a glorified body which had unique capacities.