Transhumanism is a loosely defined movement that has developed gradually over the past two decades. [1] It promotes an interdisciplinary approach to understanding and evaluating the opportunities for enhancing the human condition and the human organism opened up by the advancement of technology. Attention is given to both present technologies, like genetic engineering and information technology, and anticipated future ones, such as molecular nanotechnology and artificial intelligence.

NOW IN PAPERBACK"€"Starting from a collection of simple computer experiments"€"illustrated in the book by striking computer graphics"€"Stephen Wolfram shows how their unexpected results force a whole new way of looking at the operation of our universe.

Features of consciousness difficult to understand in terms of conventional neuroscience have evoked application of quantum theory, which describes the fundamental behavior of matter and energy. In this paper we propose that aspects of quantum theory (e.g. quantum coherence) and of a newly proposed physical phenomenon of quantum wave function "self-collapse"(objective reduction: OR -Penrose, 1994) are essential for consciousness, and occur in cytoskeletal microtubules and other structures within each of the brain's neurons. The particular characteristics of microtubules suitable for quantum (...) effects include their crystal-like lattice structure, hollow inner core, organization of cell function and capacity for information processing. We envisage that conformational states of microtubule subunits (tubulins) are coupled to internal quantum events, and cooperatively interact (compute) with other tubulins. We further assume that macroscopic coherent superposition of quantum-coupled tubulin conformational states occurs throughout significant brain volumes and provides the global binding essential to consciousness. We equate the emergence of the microtubule quantum coherence with pre-conscious processing which grows (for up to 500 milliseconds) until the mass-energy difference among the separated states of tubulins reaches a threshold related to quantum gravity. According to the arguments for OR put forth in Penrose (1994), superpositioned states each have their own space-time geometries. When the degree of coherent mass-energy difference leads to sufficient separation of space-time geometry, the system must choose and decay (reduce, collapse) to a single universe state. In this way, a transient superposition of slightly differing space-time geometries persists until an abrupt quantum classical reduction occurs. Unlike the random, "subjective reduction"( SR, or R) of standard quantum theory caused by observation or environmental entanglement, the OR we propose in microtubules is a self-collapse and it results in particular patterns of microtubule-tubulin conformational states that regulate neuronal activities including synaptic functions. (shrink)

Available in English for the first time, Imperfect Garden is both an approachable intellectual history and a bracing treatise on how we should understand and experience our lives. In it, one of France's most prominent intellectuals explores the foundations, limits, and possibilities of humanist thinking. Through his critical but sympathetic excavation of humanism, Tzvetan Todorov seeks an answer to modernity's fundamental challenge: how to maintain our hard-won liberty without paying too dearly in social ties, common values, and a coherent and (...) responsible sense of self.Todorov reads afresh the works of major humanists--primarily Montaigne, Rousseau, and Constant, but also Descartes, Montesquieu, and Toqueville. Each chapter considers humanism's approach to one major theme of human existence: liberty, social life, love, self, morality, and expression. Discussing humanism in dialogue with other systems, Todorov finds a response to the predicament of modernity that is far more instructive than any offered by conservatism, scientific determinism, existential individualism, or humanism's other contemporary competitors. Humanism suggests that we are members of an intelligent and sociable species who can act according to our will while connecting the well-being of other members with our own. It is through this understanding of free will, Todorov argues, that we can use humanism to rescue universality and reconcile human liberty with solidarity and personal integrity.Placing the history of ideas at the service of a quest for moral and political wisdom, Todorov's compelling and no doubt controversial rethinking of humanist ideas testifies to the enduring capacity of those ideas to meditate on--and, if we are fortunate, cultivate--the imperfect garden in which we live. (shrink)