' s so beautiful ! A good day to be an OOB collector for sure . <| sep |> That probably means 2 fully loaded belts . For the main bus line you never mix components on the belts , makes it more difficult to branch off . You want the belts to be balanced equal spread of components on both sides of both belts , so all 4 lanes in this example so you don ' t slow down production by backing up lane . <| sep |> So that makes what this professor did okay ? Give me a break . <| sep |> I ' ve found it useful to remind myself of some vocabulary , simple every day objects that I forgot in the past 15 years when I stopped speaking it every day in school . But I ' m not going to be the typical user anyway because I know the grammar as if its almost natural again , 15 years ago .