Abstract

The thought that it might be possible to develop a method of scientific discovery, a procedure of investigation and reasoning which, so long as its principles were studiously followed, would be guaranteed to result in scientific knowledge, has long been recognized to be a mere philosophers' dream, with no more possibility of fulfilment than the alchemists' dream of producing a philosophers' stone which would turn base metals into gold. Yet it remains the case that the authority of science rests on claims made on behalf of its methods; they are regarded as somehow superior to, or more reliable than, any other means of acquiring beliefs about the world around us. To say that there is no scientific evidence that any of the food additives currently permitted in Britain have any harmful effects is a way of dismissing as groundless and irrational the fears of those who think that such additives do have harmful effects. Whereas to say that it is scientifically established that smoking causes lung cancer is a way of saying that this is something a smoker ought to worry about.