Every moment has its momentum.
Something behind it has just been determined,
and something before it is about to be.
— if we think of time as a thing in motion, like an arrow.
But what if time is the motion itself?
Is the past then before and the future behind?
And what if time is the continuity of presence?
Phenoscopy analyzes ‘whatever is before the mind in any way, as percept, image, experience, thought, habit, hypothesis, etc.’ (Peirce).
What does it mean for something (X) to be ‘before the mind’? Most obviously, X can be an object of your attention, something you are “minding” or conscious of. The sound of the rain, say. But there must be other ways of being ‘before the mind,’ – or ‘in the mind,’ as Peirce sometimes put it. He included ‘thoughts’ and ‘habits’ in his ‘whatever’ list, but you cannot be directly conscious of either.
Thought is often supposed to be something in consciousness; but on the contrary, it is impossible ever actually to be directly conscious of thought. It is something to which consciousness will conform, as a writing may conform to it. Thought is rather of the nature of a habit, which determines the suchness of that which may come into existence, when it does come into existence. Of such a habit one may be conscious of a symptom; but to speak of being directly conscious of a habit, as such, is nonsense.— Peirce, EP2:269
You can be indirectly conscious of a habit, by using a sign to refer to it, as this sentence has just done. The sign at the moment has to be a replica of a legisign. But habits – including the habits or “laws” of nature – are themselves legisigns. They determine the momentum of the moment by determining what comes into (or goes out of) existence at this time – just as the Thought determines where your thinking and feeling are presently going.
The only kind of sign that can embody this momentum is the argument: for ‘“urging” is the mode of representation proper to Arguments’ (Peirce, EP2:293). Likewise some kind of urging seems to be the mode of life itself, driving all the creatures in its urgent grip like ‘The force that through the green fuse drives the flower’ (Dylan Thomas).