what is the "density" exactly means?

[zenmaster]

however naturally, i cant have that confidence.

I can relate.

moreover, a 4d entity, is an entity who is learning the ways of love, not even wisdom. 4d is not a density in which one would learn the intricacies of light, as in the light part of light/love, the knowledge.

True. But considering all info has already existed, that means little. If part of the point is to learn, I've learned a great deal from 3d.