Bloch's model of ritual language denies the possibility of creativity. Thomas Csordas, in contrast, analyzes how ritual language can be used to innovate. Csordas looks at groups of rituals that share performative elements ("genres" of ritual with a shared "poetics"). These rituals may fall along the spectrum of formality, with some less, others more formal and restrictive. Csordas argues that innovations may be introduced in less formalized rituals. As these innovations become more accepted and standardized, they are slowly adopted in more formal rituals. In this way, even the most formal of rituals are potential avenues for creative expression.