Yeah about that, I have yet to come with a definition of astral travel that differentiates from one of the many dream experiences I have had, would you like to give that a try?

1.- I still don't see how you make a difference between this and 2, as I have this in the middle of the night? So perhaps you just need to experience this at a different sleep cycle?
2.- What constitutes complete lucidity?

Yes, I was referring to these feelings as well. Generally the ones that come from depression; I have used these in dreams a number of times before, without it going wild or destabilizing at all. Note that I use everything as means of fighting, so obviously that depression of feeling like not taking action and weakness are also used for this.

Have you had dreams without a body? In these, your mind is there floating in 3rd person observing a part of the dream. Scan takes it a step further, that part of your mind starts to blend with the parts of the dream and then whatever you have come into contact with is no longer another part of the dream, but also you. In this case, since it is "you" you can understand and feel what said object is going through. Basically, the old saying that "you are the dream" taken a bit too literal.