1 Early string theory as a challenging case study for

The history of the origins and first developments of string theory, from Veneziano’s formulation of his famous scattering amplitude in 1968 to the socalled first string revolution in 1984, provides invaluable material for philosophical reflection. The reasons why this episode in the history of modern physics – one still largely unknown to the philosophy of science community despite its centrality to theoretical physics – represents a particularly interesting case study are several and of various nature. It is the aim of the present Chapter to illustrate some of them. In general, the story of the construction of a new scientific theory has an evident interest in itself, as a concrete example of how a particular theory has been discovered and developed by a given community and over a certain period of time. On the other hand, case studies taken from the history of science are commonly used, by those philosophers of science who pay attention to actual scientific practice, to provide some evidence for or against given positions on traditional epistemological or methodological issues. In other words, historical case studies are attributed, with respect to philosophical ‘theories’ on given aspects of the scientific enterprise, a role analogous to that of the data of experience in scientific theories. These aspects can be of a very general character, such as those regarding the methodology, aim and evaluation of scientific theories; or of a more specific kind, such as the significance of a certain principle, argument or concept. The case study presented by early string theory, as narrated by the contributors to this Volume, is fruitful from both a general and a specific perspective. It provides, first of all, an illustration of the first steps of a scientific theory which has been dominating a significant part of theoretical physics research over the last decades, thus feeding the philosophical reflection with