What is the main controversy over social constructionism?

Social constructionism may be defined as a perspective which believes that a great deal of human life exists as due to social and interpersonal influences.  However, this leads to a major criticism of social construction. That, if everything is a social construction, then social constructionism is also a social construct and there is no reason to believe in it, rather than any other taken-for-granted assumption. This portrays the argument that social construction may not be...