Segall

"I think a good entry point there is to talk about what subjectivity and objectivity end up looking like in Whiteheads process philosophy because he'll still use those terms but rather than the subject being a separate substance that exists in this inner dimension and objects being this external sort of material stuff out there and never the two shall meet, what Whitehead suggests is that we put these two terms into a temporal relationship as phases in a process and so he has this term, it's actually a Latin term, he doesn't invent it but he brings it into English: concrescence. And it's the process whereby a new moment arises and achieves a new perspective on the universe and then gifts itself to the future and what's going on in that process of concrescence is a movement from the objectivity of the already actualized past where you have, say, what Whitehead would call many objective data, or an objective datum let's say, and that all of that data that's built up over the course of the historical becoming of the universe grows together into a new subject. And so for Whitehead subjectivity is something that emerges out of objectivity you could say, which is the reverse of the idealist who wants to say no, no, no, the subject is first, objectivity is an appearance that arises
within the subject. Whitehead is saying subjects arise out of the growing together of these objects which the subject feels and unifies but as soon as that subject emerges and has this new perspective on the past it perishes it dies. It becomes what he calls a superject, so there's concrescence then there is this process where the objects from the past grow together into a new subject which then itself perishes to become a superject launching itself into the future. But that superject is then an object for the next round of concrescence to receive and produce a new subject - a novel perspective which is a little bit different because it includes this last perspective that was just added.  And so subject and object become phases in a process, that is, it's cyclical, it's iterative and it's cumulative and so rather than having two totally different types of substances: subject, object - mind, matter, you have a process where mind is passing into matter and matter is passing back into mind and a kind of learning process takes place as a result of the tension and the resistance that builds up between the two''.