This ideal vision of debate and deliberation has taken an increasingly central role in modern theories of democracy (Habermas, 1984;Cohen, 1989;Rawls, 1997;Mansbridge, 2003).
empirical evidence has also led to an increasing awareness of the dangers of style and rhetoric in biasing participants towards the most skillful, charismatic, or numerous speakers (Noelle-Neumann, 1974;Sunstein, 1999).