Organisms and other biological entities are mistake-prone: they get things wrong. The entities of pure physics, such as atoms and inorganic molecules, do not make mistakes: they do what they do according to physical law, with no room for error except on the part of the physicist or their theory. We set out a novel framework for understanding biology and its demarcation from physics – that of mistake-making. We distinguish biological mistakes from mere failures. We then propose a rigorous definition of mistakes that, although invoking the concept of function, is compatible with various views about what functions are. The definition of mistake-making is agential, since mistakes do not just happen – at least in the sense analysed here – but are made. This requires, then, a notion of biological agency which we set out as a definition of the Minimal Biological Agent. The paper then considers a series of objections to the theory presented here, along with our replies. Two key features of our theory of mistakes are, first, that it is a supplement to, not a replacement for, existing general frameworks within which biology is understood and practised. Secondly, it is designed to be experimentally productive. Hence we end with a series of case studies where mistake theory can be shown to be useful in the potential generation of novel hypotheses of interest to the working biologist.
philosophy visiting speaker sessions
University of Reading