 This rebuttal is too swift. It presupposes that the addition of a new truth \(A\) to an existing corpus \(K\) guarantees that your revised belief \(K\)*\(A\) constitutes progress towards the truth. But whether or not \(K\)*\(A\) is closer to the truth than \(K\) depends not only on a theory of truthlikeness but also on a theory of belief revision. (See also the entry on the  logic of belief revision.)