Good and Real: Demystifying Paradoxes from Physics to Ethics
In Good and Real, Gary Drescher examines a series of provocative paradoxes about consciousness, choice, ethics, quantum mechanics, and other topics, in an effort to reconcile a purely mechanical view of the universe with key aspects of our subjective impressions of our own existence.
Many scientists suspect that the universe can ultimately be described by a simple (perhaps even deterministic) formalism; all that is real unfolds mechanically according to that formalism. But how, then, is it possible for us to be conscious, or to make genuine choices? And how can there be an ethical dimension to such choices? Drescher sketches computational models of consciousness, choice, and subjunctive reasoning -- what would happen if this or that were to occur? -- to show how such phenomena are compatible with a mechanical, even deterministic universe. Analyses of Newcomb's Problem (a paradox about choice) and the Prisoner's Dilemma (a paradox about self-interest vs. altruism, arguably reducible to Newcomb's Problem) help bring the problems and proposed solutions into focus. Regarding quantum mechanics, Drescher builds on Everett's relative-state formulation -- but presenting a simplified formalism, accessible to laypersons -- to argue that, contrary to some popular impressions, quantum mechanics is compatible with an objective, deterministic physical reality, and that there is no special connection between quantum phenomena and consciousness.
In each of several disparate but intertwined topics ranging from physics to ethics, Drescher argues that a missing technical linchpin can make the quest for objectivity seem impossible, until the elusive technical fix is at hand.
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LibraryThing ReviewUser Review - haig51 - LibraryThing
'Ambitious' does not do justice to the scope of this book's project of explaining no less than all of reality and dispelling the most beguiling of modern philosophical paradoxes. Drescher's title ... Read full review
Amazing. Will dissolve your confusion about free will and determinism, about Newcomb's Paradox and counterfactuality. It can be difficult and technical, but if you can read it it'll be worth it. It'll be best for readers who have a bit of an AI background - Drescher does, and it often comes through. People unfamiliar with the notion of search trees and utility functions will have to pick it up through Drescher's explanation, which can be a little confusing sometimes.