The facts of social sciences are ones that stem from scientificexpertise, but in the social world, everyone is their own expert.Everyone lives in society, and experiences either first-hand, orclosely second-hand, the same phenomena that social scientistsinvestigate. Consequently, people are not...

Economic measurements are generated by complicated systems of measurement involving economic and bureaucratic processes. Whether these measuring instruments produce reliable numbers: ‘facts’ that travel well, depends on the qualities of these systems. Ideas from metrology, and from the...

This lecture is not in any sense a survey of the …field. It is a highlyselective and personal view of the motivation behind the fi…eld and some ofthe key themes that link the literature. Thus, it represents a manifestopresented in the hope that somebody who encounters these ideas for the...