MASS,1. problems have endurance. So you could say, on a thought level, that thought mass is basically problems. If thought mass is enduring, then it is basically composed of problems. If ridges are enduring, then they must be problems. Why would a problem endure? The problem is the two confusions and the two stable data counter-opposed, and one doesn’t look at either of them or as-is either of them, so you get an endurance of energy masses in the mind. Mental mass is mass. It has weight; very tiny, but it has weight, and it actually has size and shape and so forth. (SH Spec 26X, 6107C03) 2. (in the GPM) when we say mass we mean mass. It’s electronic standing waves actually, and they usually appear black to the pc and these become visible. (SH Spec 96, 6112C21) 3. a mass is no more and no less than a confusion of mis-managed communication. (Dn 55!, p. 65) 4. there are two types of mass. There is the first type which is simply mocked up mass in mocked up space. This we know by agreement to be the physical universe. There is a second type of mass, which is the space-mass experience mass, which we call a facsimile or an engram. (PAB 52)
Hubbard, L. R., (1975) Dianetics and Scientology Technical Dictionary. Los Angeles: Church of Scientology of California Publications Organization.