And finally, (with regard to “ad hominem attacks”): Quoting you:  You should know that on Wikipedia, you won’t get anywhere with that sort of attitude and may well be blocked. Please respect the fact that this article has existed since 2004; other editors have other ideas too. I just reverted some I.P. editor, who, apparently not impressed by your arguments (or finding your contributions unsuitable) deleted the whole bit you added. And, as I sense might be starting to dawn on you, other editors have ideas for the scope of its content that vary from yours. If you find some factual errors, please feel free to correct them. If you see assertions that need support, please cite them. But please don’t presume to come here and delete what has been stable for years and pronounce what you believe to be the proper scope of Solid modeling and how it is no more than a treatise on the mathematical underpinnings.  