what is the "density" exactly means?

[zenmaster]

Mind is a time/space construct. Simply put, there is no communication (or life) without it. The so-called physical is necessarily of time/space (or non-local) as well (all atoms have time components). It's just that the focus of consciousness is biased towards space/time perception, while we are 'here'. The unconscious, and subconscious, which we necessarily draw upon when perceiving or evaluating anything (any ego faculty), or learning anything, are of time/space. A very small percentage of what makes us alive and interesting is only in space/time.

Reducing consciousness to space/time only pushes us back to a mechanical view of existence where thoughts and memory 'are' electrical pulses, and the universe is a container of matter.