The early Wittgenstein and the logical positivists that he…

““The early Wittgenstein and the logical positivists that he inspired are often thought to have their roots in the philosophical investigations of René Descartes.9 Descartes’s famous dictum “I think, therefore I am” has often been cited as emblematic of Western rationalism. This view interprets Descartes to mean “I think, that is, I can manipulate logic and symbols, therefore I am worthwhile.” But in my view, Descartes was not intending to extol the virtues of rational thought. He was troubled by what has become known as the mind-body problem, the paradox of how mind can arise from nonmind, how thoughts and feelings can arise from the ordinary matter of the brain. Pushing rational skepticism to its limits, his statement really means “I think, that is, there is an undeniable mental phenomenon, some awareness, occurring, therefore all we know for sure is that something—let’s call it I—exists.” Viewed in this way, there is less of a gap than is commonly thought between Descartes and Buddhist notions of consciousness as the primary reality. Before 2030, we will have machines proclaiming. Descartes’s dictum. And it won’t seem like a programmed response. The machines will be earnest and convincing. Should we believe them when they claim to be conscious entities with their own volition?””

— Ray Kurzweil