Maybe it was metaphorically speaking of the 7 densities.

1st Density - Awareness as a point; Physical Matter.
2nd Density - Awareness as a line; Biological matter; Development of a group or species identity.
3rd Density - Volumetric awareness; Ego; Loss of group identity, development of individual identity; Ability to remember past and recognize the future while retaining present awareness.
4th Density - Containment of volumetric awareness; Superconsciousness; Reintegration of group identity without loss of ego identity; As vibration increases, perception of past, present and future become more fluid along with the ability to interface with multidimensional and multidensity realities; Negatively oriented consciousness becomes more difficult to maintain.
5th Density - Experiential awareness of "I" as a group identity; Not bound by linear time.
6th Density - Awareness as the dimension itself.
7th Density - Awareness as the multidimensional experience; Group-matrix identity (Social Memory Complex).