> Things can be either proven or not proven, and this is not proven. On the contrary, nothing in science is ever proven, only disproven. We can have less or m

> Things can be either proven or not proven, and this is not proven. On the contrary, nothing in science is ever proven, only disproven. We can have less or more confidence in a particular model; and whether you should use a particular model depends on the cost/benefit analysis. In this case, there is some evidence that it might be helpful, although somewhat disputed; but playing the game certainly doesn't hurt, and doesn't cost much, so it might make sense to give it a try.