what is the "density" exactly means?

[zenmaster]

The Ra material seems to be presented from the standpoint of "dialectical monism". So, mechanically, each new possibility provided by the new duality is a like a new 'degree of freedom'.

'new degree of freedom' with each level idea seems perceptive. it indeed seems as such.

1D = space/time and time/space components only (but spiraling up to next level)
2D = 1D s/t (2D s/t and t/s) and 1D t/s (2D s/t and t/s)

so you say that in 2d, there is 1d space time, but it has 2d time/space ? but it also contains 1d time/space too ?

i put it this way, because what you described there seems like just addition of 2d to 1d, in t/s and s/t.

It's basically a bifurcation, where 2D s/t (or t/s) has a 'root' or derivative component (if my math vocabulary is accurate) in 1D space or time. That amount complexity is just enough to allow for the sustaining, self-organizing, or growth of structures that we associate with life (and mind). I'll look in Larson's "Beyond Space and Time" to see if it's discussed.
I will follow up on this later.

also the focus on consciousness seems to follow some kind of pattern: "me" 1D, "we" 2D, "me" 3D, "we" 4D..etc

1d is more probably 'we' in an infinite fashion, since everything is united in that state.

like
we 1d, we/me 2d, me 3d, me/we 4d, me/we 5d, we 6d.

In other words, we = from-one-to-all, or outward, and me = from-all-to-one, or inward. The subdensities of 3D have the same pattern (again Spiral Dynamics vMemes).