The DK effect is a cognitive error where those who are less skilled have a more definite unshakable conviction in their opinions than the experts. This is likely caused by the unskilled not being skilled enough to see their mistakes while the skilled understand the full complexity of the issue and recognize the possibility of mistakes. In our culture excellent examples (among hundreds) are the anti ACA people who are certain it will destroy the budget and health-care while the experts say it will save money, the anti GMO protesters who call GMO crops poison while the biologists and food professionals indicate that there is no danger, and those who demand that, despite the complete consensus by all trained biologists and scientists in every field, biblical creation (or some variation thereof) be taught at least along side of evolution. In our complex world we can not all know everything. If we are to live in a society where we have made the best choices, we cannot afford to let our personal preferences get in the way of the truth. When the skilled agree, making decisions based on our unskilled opinions is detrimental to our health.