Okay, so it seems to me that you mean it in the first sense that I mentioned. You mean that you regard it as self-contradictory to doubt the existence of an objective world.Tamminen wrote:I mean it in the same sense as Descartes found that it is impossible to doubt his experiences and therefore concluded that he exists, or in the same sense as I have found the necessity of the subject.
For my part, I favour the second sense that I mentioned. I think the idea that there exists an objective world about which we can make objective propositions is useful and that this utility is part of the the definition of existence. Or, at least, the only definition of existence that can be made unambiguous.