Daniel C. Dennett

(1942 - 2024)

Although our subjective impression is of a richly detailed visual world, numerous empirical results suggest that the amount of visual information observers can perceive and remember at any given moment is limited. How can our subjective impressions be reconciled with these objective observations? Here, we answer this question by arguing that, although we see more than the handful of objects, claimed by prominent models of visual attention and working memory, we still see far less than we think we do. Taken together, we argue that these considerations resolve the apparent conflict between our subjective impressions and empirical data on visual capacity, while also illuminating the nature of the representations underlying perceptual experience.

In "The pitfalls of heritability," a review of Edward O. Wilson’s Consilience Times Literary Supplement, Feb 12, 1999, p33], Jerry Hirsch claims to have convicted Wilson of a "confusion about genetic similarity and difference." In his book, Wilson claims that if we assume that "a mere one thousand genes out of the fifty to a hundred thousand genes in the human genome were to exist in two forms in the population," the probability of any two humans--excluding identical siblings--having the same genotype is vanishingly small. Hirsch points out that a single genotype can be produced in more than one way, thus increasing the likelihood of a single genotype recurring in the human population. Hirsch’s point is fair enough as far it goes, but it does not go nearly far enough. Hirsch has failed to carry out all the relevant calculations needed to determine the probability of two humans having the same genotype. In the realm of Vast numbers ("Very much greater than ASTronomical"--Dennett, 1995, p109), increased likelihood in and of itself tells us nothing. Here, then, are some of the relevant calculations.

tephen Jay Gould complains that in Darwin's Dangerous Idea I attack his views via "hint, innuendo, false attribution," and "caricature" [NYR, June 26]. That is false. On the contrary, I went to extraordinary lengths to ensure that my account of his views was fair and accurate. One does not lightly embark on the course of demonstrating that a figure as famous and as honored as Stephen J a y Gould—"America's evolutionist laureate"—has misled his huge public about the theories in his field. I knew he was going to hate my book, and given the effectiveness of his past public attacks on sociobiology, IQ testing, and other targets of his disfavor, prudence alone would dictate that I should secure my criticisms against easy rebuttal and condemnation.

This article is an introduction to current issues in the field via a brief review of the history of the field since ryle's "the concept of mind" in 1949. The contributions of ordinary language philosophy and the first wave of identity theory provide the background for the development of the various brands of functionalism that occupy the center of attention today. Problems with functionalism concerned with mental representation, "qualia" and other presumed features of conscious experience are examined. There is an extensive bibliography.