Imagine a highway – imagine it is infinite, for as you drive on it, it creates ever more miles of road – now if that is the case, is it possible for one person to be ahead of another? – if being ahead is based on finite terms, then as there is a limited number of x, hence if I have more, then I may be "ahead;" but when ahead always expands, hence, there is only two possibilities, one, you are heading in the right direction!