Why exactly do negatives entities inevitably need to switch polarities?

[Patrick]

Sidenote to the topic of this thread: I always had this question about it. When Ra says "throughout the octave of third density" was that an error somehow by referencing third density? Or is it in reference to reaching the ultimate evolution while in third-density, well beyond green-ray harvest? Or something else?

I think it likely that this is an uncorrected error. Each density could be considered its own octave, but the journey of polarity is not confined to the boundaries of third density alone. Hard to know for sure though.

Yep.

Questioner: Could you define the word density as we have been using it to give us a little greater idea of the concept of this term when used by you?

Ra: I am Ra. The term density is a, what you would call, mathematical one. The closest analogy is that of music, whereby after seven notes on your western type of scale, if you will, the eighth note begins a new octave. Within your great octave of existence which we share with you, there are seven octaves or densities. Within each density there are seven sub-densities. Within each sub-density, seven sub-sub-densities, and so on infinitely.

So there's THE octave and the octave.