Well, how hard can that be? After all, the advert reads "There's probably no God, now stop worrying and enjoy your life." When I first saw it, I thought it sounded a little wishy washy until I read that the "probably" was inserted precisely because of these ASA requirements. So, the atheists were smart. But the Christian Voice is demanding that these claims be proven. Now I doubt they'd ask for proof if the sign on the bus read "Jesus loves you". That would be pretty hard to substantiate. What do these Christians have to say for themselves in this case? Stephen Green, national director of the Christian Voice puts it this way:
"It is given as a statement of fact and that means it must be capable of substantiation if it is not to break the rules," he said.
"There is plenty of evidence for God, from people's personal experience, to the complexity, interdependence, beauty and design of the natural world.
"But there is scant evidence on the other side, so I think the advertisers are really going to struggle to show their claim is not an exaggeration or inaccurate, as the ASA code puts it," he added.
Hearing voices and a general feeling of well-being is not evidence for God. All his examples that he cites as evidence are subjective - that is, they are open to individual interpretation. In fact, if you had to weight the evidence for "there probably is no God" against "there probably is a God", you would find the negative case to be a clear favorite. On one side you find the bible and a lot of testimonials. On the other, you find science texts, theories, supporting observations, successful predictions, etc. to show that a god is not needed to account for all the things we see or experience.
Beyond this, I haven't really heard of any significant acts against the atheist bus campaign, at least over in Britain. That's a good sign. It shows tolerance towards those of differing beliefs - or non-beliefs. Hopefully, rational thought will shortly follow.