I believe he is asking if you could just "load up" the lightworker or darkworker "software" to suit your purpose. This is what the majority of people do already.
For polarity, Steve is saying that you get best results from focusing on one or the other. Making use of both approaches is counterproductive. You get identical results from either path.
I'm trying to find the right words to show the difference between this and picking a belief system based on the situation.... Something like... Religion is about how you think the universe works, those ideas can vary. Regardless of what these ideas are, the way in which you actually live (polarity, or lack of) doesn't.
That's not quite right but I don't know how else to describe it
