This egocentric theory proposed that people's estimates of another's knowledge are biased towards their own and that early syntactic choices may be made without regard to the addressees' needs, while beliefs about the addressees knowledge did not affect utterance choices until later on, usually in the form of repairs.
The egocentric theory claims that people's assessments of another's knowledge lean toward their own perspective, and early syntactic choices can be made without regard for the addressee's needs. However, later on, when it comes to utterance choices, beliefs about the addressee's knowledge become significant.