@schopenhauer1 *Grumble*. Seems like you're after cliff notes because you can't be arsed reading yourself. Anyway, regarding
Nihil Unbound - rather than Brassier's more recent work - the idea is that the truth of extinction can function as a tool for
enlightenment: it teaches us something about the universe and our place in it. In Brassier's words, "Nihilism is not an existential quandary but a speculative opportunity." That is, Brassier doesn't really care about the usual existential ennui or anguish of finitude that extinction usually elicits - his concern is wholly with
thought, and the 'speculative opportunity' that the thought of extinction offers. Here is Levi Bryant's nice encapsulation of it:
"Brassier argues that the thought of radical extinction carries with it an enlightenment. What might this enlightenment be? Why might this horrific thought of erasure, extinction, be enlightening and ethically invigorating? [Because] [t]he truth of extinction is not the gloomy thought that all is pointless because everything is going to be destroyed anyway. Rather, the thought experiment of radical extinction hopefully accomplishes three aims. Insofar as the truth of every person’s life is death (i.e., there’s no afterlife), we should not direct ourselves to an afterlife, but rather should devote ourselves to this life. How can we live in relation to ourselves, to
others, and to the earth in order to best live this brief spark that we possess? How should society be transformed and organized to maximize this existence?
Second, the truth of extinction with respect to the existence of the human species has the effect of decentering us. We can imagine a world where we are absent. As a consequence, we are not at the
center of existence. We are one being– certainly important to ourselves –among others, and we are a being like the others destined to pass away. This discovery encourages us to both respect other beings, but also to recognize the
fragility of ourselves and the world we rely on and therefore attend to the
preservation of that world. Finally, the extinction of the universe cures us of messianism. There is no apocalypse, no final revelation of the truth, no final salvation, just this world. As such, we should squarely direct ourselves at
this world and the work required to maintain this world, not at a world to come or an afterlife." (
https://larvalsubjects.wordpress.com/2012/03/05/entropy-and-me/)
Brassier's recent work is an attempt to flesh out how thought does in fact function if the above claims are in fact the case. As he himself puts it, "[Nihil Unbound] contends that nature is not the repository of purpose and that consciousness is not the fulcrum of thought. [Yet] [t]he cogency of these claims presupposes an account of thought and meaning that is neither Aristotelian—everything has meaning because everything exists for a reason—nor phenomenological—consciousness is the basis of thought and the ultimate source of meaning. The absence of any such account is the book’s principal weakness (it has many others, but this is perhaps the most serious)." (
http://afterxnature.blogspot.com.au/2012/08/ray-brassier-interviews-with-after_26.html). "Concepts and Objects" is one of Brassier's attempts to remedy this short-coming (a remedy inspired by Sellars), and come up with an account of thought that is adequate to the image of it presented in NU (along with his other more recent papers like "That Which is Not", "Nominalism, Naturalism and Materialism", and "Against Flat Ontologies").
The full significance of nihilism and extinction for Brassier is found in the last chapter of NU, "The Truth of Extinction", which is worth reading if you actually care about this topic rather than getting others to do your work for you. Anyway, that's roughly the context in which C&O is written. I've merged this thread with the reading thread, as there's no reason why there should be two separate threads on an almost identical topic (Edit: it looks like the OP didn't carry over, and I'm not sure how to make that happen...)