 The example shows that issues of knowledge and ignorance, are crucial for analysis of fair division protocols. Epistemic logic (see entry on  epistemic logic)  can shed much light on many subtle aspects of knowledge and ignorance in social interactions, and in particular in fair division problems; for an interesting cake-cutting experiment showing the importance of knowledge and ignorance, see Kyropoulou et al. 2019. Still, in traditional studies of fair division the role of knowledge is not taken into account, as is witnessed by the comprehensive study of “cake cutting algorithms” in Robertson &amp; Webb (1998).