Excluded identities are not merely a question of lack of confidence, persistence or motivation; they are more fundamentally about a disidentification with mathematics in Schoenfeld's (1994) sense of doing mathematics, as one who can develop legitimate mathematical ideas within a personal epistemology which enables not only creativity or "key ideas" in Raman's (2003) sense-but also access to the use of mathematical warrants that is, agency with regard to mathematical authority.