 The wording of the proposed advert caused considerable debate among atheists and Christians alike and Sherine discussed it in a post-launch article, "Probably the best atheist bus campaign ever", on the "Guardian's" "Comment Is Free" section.Dawkins stated that he preferred the wording "There is almost certainly no God".Ariane Sherine claims it is necessary to be factually accurate, and that as it is impossible to disprove the existence of God it is only possible to say one 'probably' does not exist.