it appears that Hume intends us to understand “new” to merely indicate the difference in existential quality of the impression alone, a contingent condition of the mind, rather than existential quality of that by which the mind is impressed, which is a necessary condition of the object causing the impression. — Mww
Is that so clear to you? How can you tell what is contingent from what is necessary? For instance, Hume points out that:
"When we press one eye with a finger, we immediately perceive all the objects to become
double, and one half of them to be remov’d from their common and natural position. But as we do not attribute a continu’d existence to both these perceptions, and as they are both of the same nature, we clearly perceive, that all our perceptions are dependent on our organs, and the’ disposition of our nerves and animal spirits." (This chapter)
Some animals see way more colors than we can, are we also to say that these animals are in a
better necessary condition to perceive objects in the environment than we are? Or is this fact of perception contingent on the nervous systems they have?
So, this distinction is a bit blurry to me,
not that it doesn't exist.
If the “strongest relation” is constant conjunction, then the connecting of ideas can still occur without the input from interrupted impressions, which explains how it is we don’t forget what we’re looking at during those interruptions. Apparently, imagination is that by which our ideas continue to be naturally connected to each other absent the impressions to which they would belong if our impressions were uninterrupted. In modern parlance, perhaps we might say, the mind “rolls over” from one impression to the next? — Mww
Sure. I agree, in principle it works this way. In practice, we need the proper stimulation to "awaken" the ideas we have in us.
That is one aspect of the imagination for Hume, but he also stresses "instinct and natural impulse."
I do think he does do us a favor in highlighting the role of the imagination in general, we may disagree with his exposition, but it is a quite pervasive theme in his philosophy, not explored in similar length or depth in other figures.
Kant did talk about it, but gave it a lesser role than Hume did, if I recall correctly: which is totally fair.
for any singular impression for which constant conjunction of its ideas doesn’t work with congruent certainty as with repetitive impressions, imagination may very well supply its ideas with respect to that singular impression, which may not belong to it. — Mww
Yes, and this may be putting too much power in the imagination. As I've said a few times, I'm not an empiricist, I agree with Cudworth, Descartes and Kant about the nature of perception, differences aside, which they indeed do have: they gave the proper role to the mind, which Hume supposed to be "an empty theater", which cannot be sustained anymore - maybe not even back then.
There was subsequently a metaphysical theory perfectly describing how this works, but what would Hume say about it? I suspect he would have rejected it, insofar as having already granted imagination extraordinary power, he would have insisted that power cannot merely be the ground of the greater one the new theory prescribes, especially seeing as how he’s already denied its validity.
You know…..consign it to the flames kinda thing. — Mww
One need not go to Kant: there was a
prior metaphysical account, before Hume, considered to be "the most extensive treatment of innatism by any seventeenth-century philosopher", Cudworth. (From the SEP) The same essential idea is to be found here.
There is some evidence he knew of his ethics. Locke did know his work, but he rejected the reasoning.
In a similar vein, Hume would likely send Kant's theories to the flames too had he been able to read them somehow.
But then we must throw Hume's own theory to the flames for several reasons: his discussion of the self is not the best, him saying that ideas can sometimes replace impressions cast doubt upon his formulation.
Also,
by far, and most importantly, is his own example, in the
Enquiry, of the "missing shade of blue", which destroys his own theory. It is quite remarkable that he can so acutely point to such an example and proceed as if it merited no more attention.