Wow people either seem to love or hate this movie. I thought it was powerful. A little unsettling. This is the first major religious historical claim that I know of that can be tested with hard evidence. It doesn't leave much room for doubt. It wasn't harsh and nasty about it, though, the facts pretty much speak for themselves. A geneticist friend said that the science was accurate, and the conclusions seemed logical. As with most challenges to religious claims, it will get resistance, but I can't see any resistance from reason or science. It was promoted by a church so there's an evangelistic closure you can take or leave, but the documentary itself isn't preachy.