 Hence, \(\varphi\) must be false. Then, following Pacuit and Roy (2017:  Section 6)  again, Ann believes that Bob’s assumption is correct, that is, Ann believes \(\varphi\) is correct. Furthermore, the description of the situation states that “Ann believes that Bob assumes that Ann believes that Bob’s assumption is wrong”, which, given that \(\varphi\) is Bob’s assumption, can be rewritten as “Ann believes that Bob assumes that Ann believes that \(\varphi\) is wrong”. But then, not only Ann believes that she believes that \(\varphi\) is correct; she also believes that Bob assumption is that she believes that \(\varphi\) is wrong. Thus, it is the case that she believes Bob’s assumption is wrong (Ann believes that Bob’s assumption is that she believes that \(\varphi\) is wrong, but she believes that is wrong: she believes that \(\varphi\) is correct). So, \(\varphi\) is true.