There is no dispute about the set idea. I also like the idea that 'w' is living, I also like a notion that 'z' is nonliving. That gives us wyw = inhabited planet and zyz=uninhabited planet. From this message '1' beign large makes sense, so does '~' being small. However, the line G*P11$11P*G sort of doesn't make sense. I can see that multiple '1's mean very big, but then this would mean that the speed of light is a very long time. Which doesn't make sense, if the $ were a @ it would make perfect sense. The last statement (GQAQP~Q~PQAQG) supports the idea that ~ is small, it then says 1 is a small number.