It has been noted that the places in his work which most bitterly satirize Chaucer's poetry are those which correspond to Chaucer's deviations from HIS sources, Boccacio etc. Shakespeare is not only condemning the myths that run through history, but also the alteration of these, whether for propagandistic or artistic reasons. Shakespeare is at pains to demonstrate that tradition, which grants myth and legend the illusion of official history, is a "whore and a cuckold," just as its idealized heroes and heroines are. What we see in Troilus and Cressida are the ugliest implications of conflict and struggle: the opportunities for heroism and chivalry are continually present.