Social constructionists maintain that we invent the properties of the world rather than discover them. Is reality constructed by our own activity? Or, more provocatively, are scientific facts constructed? Is everything constructed? This is a discussion of the philosophical issues that arise out of this controversial debate, analysing the various strengths and weaknesses of a range of constructivist positions. The author argues that contemporary philosophical objections to constructivism are drastically inconclusive, while offering and developing objections. He shows that the strongest...