We cannot understand 'why' mass has always existed in the universe in precisely such amounts as it does; instead of lesser amounts. Nor why it has always existed with exactly certain detailed characteristics (i.e., parameters) as in does, instead of somewhat different parameters. The exact way those realities have always been, seem to us "rational-neutral". (I.e., not contradicting reason, but not precisely solved by using reason, either.) On the other hand; if all the mass in the universe would disappear and become "nothingness"; that would seem to me " anti -rational", not just 'rational-neutral'. And if, out of a universe containing only nothingness--there would arise significant mass, or 'somethingness'; that would seem to me also "anti-rational", not just rational-neutral. (A detailed discussion of 'mass' will come later.)