This chapter introduces and discusses the concepts of necessary and sufficient conditions.

The problem of act individuation is a debate about the identity conditions of human acts. The fundamental question about act individuation is: how do we distinguish between actions? Three views of act individuation have dominated the literature. First, Donald Davidson and G.E.M. Anscombe have argued that a number of different descriptions refer to a single act. Second, Alvin Goldman and Jaegwon Kim have argued that each description designates a distinct act. Finally, Irving Thalberg and Judith Jarvis Thomson have averred that (...) some acts are sequences of causally related events, which include both a primitive bodily action and some of its effects. All of these accounts have assumed that a simple invariantist account of act individuation captures how ordinary people distinguish between acts. For my dissertation, I devised an experiment to test the action theorists' assumptions. My data show that people's intuitions seem to depend on the valence of the consequences of the action under consideration. So, an invariantist account is not possible. In light of the empirical results, I argue that if we seek a folk account of act individuation, then that account should be able to explain the variability that seems to be present in people's intuitions about different cases. (shrink)

Traditional philosophy has been under attack from several quarters in recent years. The traditional philosopher views philosophy as an armchair discipline relying, for the most part, on reason and reflection. Some philosophers doubt the legitimacy of this type of inquiry. Their arguments usually occur along two dimensions. Some argue that the primary data source for the armchair philosopher--intuition--does not provide evidence for philosophical theories. Others argue that conceptual analysis, which is the preferred method of inquiry for armchair philosophers, can't yield (...) the results the philosopher is looking for, since concepts like 'knowledge' or 'free-will' vary from culture to culture or even between persons within a culture. Finally, some philosophers argue that we should abandon the armchair program because philosophy should be an empirical enterprise continuous with the sciences. I argue that attempts to undermine intuition fail and that one can justify the evidential status of intuition in a non-question begging way. I then argue that attacks on the belief in shared concepts do not succeed because they often conflate the nature of scientific objects with those of interest to the philosopher. However, if concepts do vary from culture to culture, I show that the philosopher need not abandon the armchair. She can still do conceptual analysis but it will be only the entry point into the philosophical dialogue. I apply this approach to epistemology arguing that the central epistemic questions ought to be the existential and the normative. This approach helps to vindicate epistemic internalism. (shrink)

This article aims to clarify the notion of a psychiatric disability. The article uses conceptual analysis, examining and applying established definitions of (general) disability to psychiatric disabilities. This analysis reveals that disability as inability to perform according to expectations or norms is related to impairment as deviation from the (statistical) norm, while disability as inability to achieve (personal) goals is related to impairment as deviation from the (personal) ideal. These two views of impairment and disability are distinct from the self-organization (...) view of impairment as disrupted self-creation or disrupted self-repair and of disability as disrupted whole person self-compensation (in relation to an impairment). All these three views of disability pertain to psychiatric disability. Although there is nothing necessarily psychiatric about psychiatric disability other than the psychiatric impairment related to it, the life course and life circumstances typical of many people with (severe) psychiatric disorders may lead to disability and may thus confer some (psychiatric) specificity on this disability. This analysis may facilitate research on specific psychiatric disabilities and a broader scope for psychiatric rehabilitation. (shrink)

The philosophical method of conceptual analysis has been criticised on the grounds that empirical psychological research has cast severe doubt on whether concepts exist in the form traditionally assumed, and that conceptual analysis therefore is doomed. This objection may be termed the Charge from Psychology. After a brief characterisation of conceptual analysis, I discuss the Charge from Psychology and argue that it is misdirected.

The purpose of the present thesis is to apply philosophical methods to the ongoing debate of the precautionary principle, in order to illuminate this debate. The thesis consists of an Introduction and five papers. Paper I con-cerns an objection to the method of conceptual analysis, the Charge from Psychology. After a brief characterisation of conceptual analysis, I argue that the Charge from Psychology is misdirected. In Paper II, the method of conceptual analysis is applied to the concept of precaution which (...) is ana-lysed in terms of precautionary actions. The purpose is explicatory. A definition involving three necessary and jointly sufficient conditions is proposed, and the implications of this analysis for the debate on the pre-cautionary principle are discussed. Paper III attempts to provide an ana-lytical apparatus which may be used for finding improved formulations of the precautionary principle. The approach is lexicographical. Several exist-ing and possible formulations of the precautionary principle are examined, and four common elements and a common structure of the precautionary principle are identified. It is suggested that the analytical apparatus pre-sented can be used in negotiations of the precautionary principle. Paper IV questions the soundness of some arguments against the precautionary prin-ciple. Five common arguments are discussed and rejected. In Paper V, two of these arguments are further discussed. I argue that an attempt at rejec-tion of the precautionary principle delivered by John Harris and Søren Holm is unwarranted, because their arguments against it are based on in-terpretations of the precautionary principle that ignore context. Paper VI deals with the idea of de minimis risk. After a discussion of the distinction between disregarding a risk and accepting it, I examine one way of deter-mining how small a risk ought to be in order to be disregarded, namely the use of natural risk levels as benchmarks. I argue that this approach fails, even if the distinction between what is natural and what is not natural can be upheld. (shrink)