You ignore the cost of "organically" figuring out the good from the bad. This is the same problem with free market economics. There are many ways of discovering the correct price/cost/idea. On one extreme, you have those who say that we should let people figure it out on their own without any kind of inhibition. But that kind of method comes at the greatest cost because essentially it's nothing but brute-forcing the solution, except human life is at stake and will be lost multiple times before the correct solution is found. It is pretty obvious that there is a more optimal method, than just letting laymen, with no knowledge on the subject matter, just try to walk blindly into the solution. I would say, that is maybe one of the meanings of what it means to be civilized; to figure out ever more optimal methods to search for solutions in all areas of life.