In recent years, the concept of evolvability has been gaining in prominence both within evolutionary developmental biology (evo-devo) and the broader field of evolutionary biology. Despite this, there remains considerable disagreement about what evolvability is. This article offers a solution to this problem. I argue that, in focusing too closely on the role played by evolvability as an explanandum in evo-devo, existing philosophical attempts to clarify the evolvability concept have been overly narrow. Within evolutionary biology more broadly, evolvability offers a (...) robust explanation for the evolutionary trajectories of populations. Evolvability is an abstract, robust, dispositional property of populations, which captures the joint causal influence of their internal features on the outcomes of evolution (as opposed to the causal influence of selection, which is often characterized as external). When considering the nature of the physical basis of this disposition, it becomes clear that the many existing definitions of evolvability at play within evo-devo should be understood as capturing only aspects of a much broader phenomenon. 1 Introduction2 The Problem of Evolvability3 The Theoretical Role of Evolvability in Evolutionary Biology3.1 The explanatory targets of evolutionary biology3.2 Selection-based explanations3.3 Lineage explanations3.4 Evolvability-based explanations3.5 What properties must evolvability have?4 What Evolvability Really Is4.1 Making sense of ft4.2 Making sense of x and b5 What of the Limbs? The Power of E6 Conclusion. (shrink)

“A sentimental layman would feel, and ought to feel, horrified, on being admitted into [an expert art] critic's mind, to see how cold, how thin, how void of human significance, are the motives for favour or disfavour that there prevail.” Thus writes William James. The art-world is dominated by critics who sneer and sentimentality, resist evocation, and issue stale, dispassionate appraisals. Memorized standards are coolly deployed to scan works for the features that are currently in fashion, before an icy verdict (...) is delivered. Untutored art enthusiasts make aesthetic judgments in an entirely differently way. For them, appraisal is read off “the sounding board of the body.” They use their emotions. Thus, according to James, there are two ways to assess art: cold and hot. So who is right, the rhapsodical museum-goer or the effete professional critic? As a first pass, I side with the rhapsodies. I think dispassionate appraisal is parasitic on passionate appraisal. Cool reason can never be sufficient on its own to assess artistic merit. This is a corollary of “aesthetic sentimentalism”—a view was championed by Hume and other British moralists. Of course, aesthetic sentimentalism does not entail that critics are wrong when they depart from the bubbling masses. It entails merely that good critics must be slaves to their own passions. Hacks may deliver aesthetic judgments dispassionately, but more sensitive critics have been known to muster an occasional gasp or thrill. Perhaps the refined emotions of professional critics have more validity than the crude gushings of James ’s “sentimental layman.” True beauty may be restricted to those works that elicit goosebumps in skilled viewers. Hume flirts with this idea. He thinks John Milton is objectively better than John Ogilby. Why? Because John Dryden said so, and he should know. John D. can arbitrate between the merits of John M. (shrink)

In recent years, the concept of evolvability has been gaining in prominence both within evolutionary developmental biology (evo-devo) and the broader field of evolutionary biology. Despite this, there remains considerable disagreement about what evolvability is. This article offers a solution to this problem. I argue that, in focusing too closely on the role played by evolvability as an explanandum in evo-devo, existing philosophical attempts to clarify the evolvability concept have been overly narrow. Within evolutionary biology more broadly, evolvability offers a (...) robust explanation for the evolutionary trajectories of populations. Evolvability is an abstract, robust, dispositional property of populations, which captures the joint causal influence of their internal features on the outcomes of evolution (as opposed to the causal influence of selection, which is often characterized as external). When considering the nature of the physical basis of this disposition, it becomes clear that the many existing definitions of evolvability at play within evo-devo should be understood as capturing only aspects of a much broader phenomenon. 1 Introduction2 The Problem of Evolvability3 The Theoretical Role of Evolvability in Evolutionary Biology 3.1 The explanatory targets of evolutionary biology 3.2 Selection-based explanations 3.3 Lineage explanations 3.4 Evolvability-based explanations 3.5 What properties must evolvability have?4 What Evolvability Really Is 4.1 Making sense of ft 4.2 Making sense of x and b5 What of the Limbs? The Power of E6 Conclusion. (shrink)

This paper argues that two of my critics (Cowie and Wilson) have become fixated on Fodor’s notion of modularity, both to their own detriment and to the detriment of their understanding of Carruthers, 2006. The paper then focuses on the supposed inadequacies of the latter’s explanations of both content flexibility and human uniqueness, alleged by Machery and Cowie respectively.

Two prevailing accounts of the structure of the mind have been provided, respectively, by the Dual System Theory and by the Massive Modularity Hypothesis. It has been claimed, however, that they cannot both be true at the same time, i.e., that they are incompatible and, thus, that one of them must be abandoned. I will offer some arguments to challenge this claim. I will show that a plausible understanding of each theory makes it possible for them both to be true (...) at the same time. Moreover, I will argue that by appealing to each other they can offer a more complete and detailed account of the architecture of the mind. (shrink)

Evolutionary psychology and intelligent‐design theory both need to be able to account for the empirical world, or the world as it is. This essay is an attempt to clarify the challenges these theories need to meet, if the relevant empirical findings are replicable. There is evidence of change in the biological world and of modularity of mind, and there is a growing body of work that finds evolutionary theory a convincing and fruitful account of the “design” of the mind. Three (...) major empirical findings within evolutionary psychology are presented and discussed. The author claims that Cartesian dualism, as it is usually meant within psychology—a split between body and mind—is false, but that Descartes' original division between body and soul has not been challenged and is not challenged by the evidence that the mind is also a biological entity. The article concludes that the convergence of theology and science is to be found in the onus to discover the truth about the world as it really is, and this calls for an ability on both parts to account for the empirical world. (shrink)