Abstract
Social constructivists claim that many phenomena that we normally assume to exist independently are really just created by collective human action, thought and language. Constructivists deploy a number of sophisticated philosophical arguments to support this thesis and, in so far as their reasoning typically serves an ulterior ideological purpose, it may fairly be called applied philosophy. The goal is to change various aspects of the existing order of things; constructivist arguments are used to show that this order is a human creation and is hence modifiable by human effort. A number of such “deconstructive” agendas are presented. The first deals with natural science and its privileged societal status; the next critiques orthodox Marxism; the third is the feminist campaign against patriarchal society. While these critical efforts have had considerable impact, their protagonists have been less successful in constructing alternatives to the items deconstructed.