certain "properties" of some cell you may be playing will be inherited by later ones. It's organic form. Ted might have more to say on this topic
It's a principle of improvisational form, not the only one and not necessarily the best one for everybody, which seemed to me very promising. Indeed, it hasn't run out of steam for me yet after several years of sophisticated fiddling with it. It is dead simple in principle and therefore might have value in getting beginner improvisers past initial block.
Play any reasonably short idea well within your technical grasp. Don't worry about inspiration. Anything, and I mean anything, will do as long as it isn't positively unpleasant to you personally.
Play it repeatedly. Exact repetitions are not important, indeed, "nearly equal" or "almost periodic" sounds are in fact more fertile for this purpose and usually much more interesting musically than a string of clones.
After a while your ear will latch onto some feature of this "cell" as being more musically interesting or exciting than the rest of it. It might be an internal phrase, a couple of prominent notes, a certain rhythm, an exciting harmony, a physical or haptic motion - absolutely anything.
When this happens, commence repeating, or rather "almost repeating" a new cell based around the perceived special feature.
After a while this new cell will in turn throw content at your mind for a third cell.
And so on.
If this sounds nothing like any accepted musical practice it is because it isn't. But it gets attention on pure sound and spontaneous response to sound, gets the mind into the eternal present and gets rid of Mr Noah Lott and his coterie of conscious analysts and critics.