One of the poorest arguments for anything is that “a bunch of people believe it,” unless it is put in proper context. Say for instance, “Biblical Archaeologists agree the gospels were written in 70 AD.” Of course, no Biblical expert would say that, they’d give a date range. The point being that it is possible to rely on a group of experts who generally believe something and therefore you can probably surmise it’s correct–unless you have time to dig into the research yourself to come to your own conclusions (in this day and age that’s hard to do on every subject, you have to pick your battles). You can also expect with any field of study, if something is in complete error that the truth eventually emerges because the one thing experts like to do is argue and are never satisfied.
But let me be clear, expert consensus is still not evidence by itself, it is more of a guide when we can’t all be experts. It also rules out statements like “The Controversy of Evolution” as there is no controversy amongst the majority of scientists, particularly those working in evolutionary biology.
Expert consensus is not the same as mass belief, especially mass belief that somehow attests to the extraordinary (someone raising from the dead). Mass belief or predominant beliefs have often been wrong throughout history and we can’t test miracles that supposedly happened in the past. Mass belief can also get people killed such as all of the accused witches and heretics that were tortured and executed.
If you need to make an argument for the existence of God don’t use mass belief. It’s kind of like peer pressure. “All these people believe in God, why don’t you?” There are far better arguments.
SIDENOTE: The Littlest Atheist is paying tribute to one of my earliest cartoons showing Jesus as a zombie. Since then I’ve seen other zombie Jesus depictions on the web. I think what our hero says in panel 3 is pretty damn accurate.