http://www.erclosetphysics.com/2021/10/dimensions-of-space-time-and.html?m=1 A distinction is further expanded and defined in the CoD as real, substantial and dimensional. In describing the reality we experience, secondary distinctions, i.e., distinctions in self and/or other, must have measurable extent and content and definable meaning. Measurable extent means dimensionality, measurable content means substance, and definable meaning means impact on experience or purpose.