David Papineau

When I woke up a few days ago, the following thoughts ran through my mind. ‘I need a haircut. If I don't get it first thing this morning, I won't have another chance for two weeks. But if I go to the barber down the road, he'll want to talk to me about philosophy. So I'd better go to the one in Camden Town. The tube will be very crowded, though. Still, it's a nice day. Why don't I just walk there? It will only take twenty minutes. So I'd better put on these shoes now, have breakfast straight away, and then set out for Camden.’

My first university was in my home town, Durban, in the mid-1960s. I was doing a mathematics degree but most of my friends were doing arts subjects. Sartre and Marx were the thinkers of the moment and my friends would press their (mostly illegal) writings on me. Ideologically I was entirely sympathetic, but intellectually they didn’t do much for me—too obscure, too difficult, too dogmatic. In my final year I chanced on Ayer’s The Problem of Knowledge. It wasn’t exactly relevant to apartheid South Africa, but I consumed it eagerly. Through Ayer I was led to Russell’s logical atomism. What appealed to me in both these authors was the sense of solving fundamental problems through careful logical analysis. Of course, in retrospect we can see that their limpid style concealed many doubtful assumptions. Yet you could always see exactly what they were claiming and how the argument was supposed to go. I still think that this is the best way to do philosophy.

Muitas ideias diferentes desfilam sob a bandeira do naturalismo filosófico. Entre elas, uma tese sobre método filosófico. A filosofia investiga a realidade do mesmo modo que a ciência. Seus métodos são semelhantes aos métodos científicos, e o conhecimento que ela produz é semelhante ao conhecimento científico. Este “naturalismo metodológico” deve ser distinguido do “naturalismo ontológico”, entendido como uma visão geral sobre os conteúdos da realidade. O naturalismo ontológico sustenta que a realidade envolve nada mais do que as entidades estudadas nas ciências naturais e não contém um reino sobrenatural ou transcendente. Embora os naturalismos ontológico e metodológico reivindiquem uma espécie de afinidade entre filosofia e ciência, as duas doutrinas são amplamente independentes.

Defenders of the Everettian version of quantum mechanics generally hold that it makes no difference to what we ought to do. This paper will argue against this stance, by considering the use of lotteries to select the recipients of indivisible goods. On orthodox non-Everettian metaphysics this practice faces the objection that only actual and not probable goods matter to distributive justice. However, this objection loses all force within Everettianism. This result should be of interest to both philosophers of physics and to ethicists.

A number of recent writers have argued that we should explain mental representation teleologically, in terms of the biological purposes of beliefs and other mental states.A rather older idea is that the truth condition of a belief is that condition which guarantees that actions based on that belief will succeed.What I want to show in this paper is that these two ideas complement each other. The teleological theory is inadequate unless it incorporates the thesis that truth is the guarantee of successful action. Conversely, the success-guaranteeing account of truth conditions is incomplete until it is placed in a teleological context.

The empirical evidence often justifies belief in scientific theories. For instance, the great wealth of chemical and other relevant data leaves us with no real alternative to believing that matter is made of atoms. Similarly, the natural history of past and present organisms makes it irrational to deny that life on earth has evolved from a common ancestry. Again, the character and epidemiology of infectious diseases effectively establishes that they are caused by microbes. Peter Lipton did much to illuminate the logic of these and many similar inferences. Often the observed facts admit of only one good theoretical explanation. Rationality therefore dictates that we infer the truth of this explanation.