The risk calculations have already been done, and it is negligible. There are a lot of better targets in Norway than this bridge/tunnel. There will also be passages between the two sections in an emergency.
UK can vote as much as they'd like. It's EU that decides, and it won't let them just come back after a few years in misery, just because they voted yes now. If they leave, they will be kept outside for years to come.
"How often you go to church (Couples who never go to church are 2x more likely to divorce than regular churchgoers.); "
But there was another study where atheist couples are less likely to divorce (if they get married) than Christian - does this mean that Christian couples that don't go to church are most likely doomed?