The principle of discretion is the genesis of a being with some form of awareness as constituted by an already aware entity. Whilst it is true to say psychic accretion is a rather all encompassing concept, there exist within this realm a multitude of forms for them.
Here what we intimate are those acts by which an object which is interpreted as alive (even in a playful manner) acquires a simple (or not so simple) form of awareness itself. The interpretation of something as such is part of the process by which such accretions form. This being-alive of the stone or whatever etc is of course a φantasy.
We use the term discretion to emphasize how it is when we isolate an object (the discrete physically par excellence) that this can occur. It is less likely to occur with an event accretion.