When cartridge razor systems first came out, the first "improvements" made by Gillette were to add a "lubricating strip" to the cartridge and call it the "plus" version. As in Atra Plus, etc. They did it too with the Good News/Good News Plus disposable. I don't understand what a lubricating strip is supposed to do, since it follows rather than precedes the blades on a stroke. Anyone have any insight on that?