books.google.com - Lost in the raging debate over the validity of social construction is the question of what, precisely, is being constructed. Facts, gender, quarks, reality? Is it a person? An object? An idea? A theory? Each entails a different notion of social construction, Ian Hacking reminds us. His book explores...http://books.google.com/books/about/The_Social_Construction_of_What.html?id=XkCR1p2YMRwC&q=magnesium&utm_source=gb-gplus-shareThe Social Construction of What?