yes it does vanish quickly. it changes. that's the trouble! but i was thinking of this as a kind of excersize in concentration. if in our lucid dreams we practiced concentrating, i wonder if it would get easier?

at first glace it seems the dream-world is inevitably ever-changing. but here's another excersize. returning to the same room in a dream, with the same items on the same shelves--a practice in stabilizing our conscienceness. perhaps we create the room very simple on paper, and then work each night to go there.

the purpose wouldn't be so much just to have a stable scene in a dream. it would be to excersize a part of our mind that is usually really fickle. i mean it seems that we can do anything with enough practice, the human mind is such an incredible design. and if we can take baby steps, maybe eventually we could start forming and -keeping- creative ideas, poems, visions of paintings, structures of music, without them going ablur.