Wrong Data

Most of the dead leave you forever, proving conclusively that there are no ghosts. Some enter the neuronal network of your personal sense of being, proving beyond doubt that you are the ghost. Nothing is beyond the scientific mind except the truth, but if you are awake to irrefutable facts then you are sleeping through corrupted data. It's not that the cosmic computer is messing with you, you just don't understand the program, how it was created so you would not see all of yourSelf - all at once.