Fear is craving for separation from sensation. When the object of fear is a particular threat in space, fear motivates the animal to move away from the threat.
Fear is flight from sensation. But when the animal is steeped in general anxiety, where does it intend to go? Well, if the world generally is the threat, the direction of our flight would be inward—and inward in a way that makes escape genuinely possible. The effort to get away from everything generally is predicated on there being an inward way that really is removed from 3-space.
We really do imagine that awareness can pull back from sensation and withdraw into the “inner” self. In the anxiety situation, we really do distinguish between sense-consciousness and the inner witness, the core-consciousness that we take to be the true self.
On one hand, we feel certain that the witness is unextended. On the other hand, fear motivates us to “go” inwards. How can “in” be an escape from things generally—i.e., from 3-space? Perhaps this “in” is actually orthogonal to the three dimensions of space.
We intend, via the imagination, to move away from sensation and towards the direction from which will, impulse, and decision arise. On Salvia we see directly that the dimensional assumptions underlying our imaginary fight away from space are well-founded. We see directly that the will that flows from the “inner” self is a real vector. The flow of nidana (inner becoming) has a direction and occupies real orthogonal extension.