According to contextualism, the content of the predicate ‘know’ changes with the context of utterance, in other words, the truth conditions of knowledge attributions depend on the attributor's context. Invariantists object it and argue that the assertability conditions of knowledge attributions, but not the truth conditions, depend on the attributor's context. Keith DeRose has recently proposed a new argument against such an invariantist response. His argument uses the knowledge account of assertion and the context sensitivity of assertion. I argue that DeRose's argument fails to rule out invariantism so that invariantism is still an important option for us.
