In this regard, it is part of the responsibility of the explainer to ensure that his or her explanation appears sufficiently worthwhile and interesting to the listener for them to attend to the information being provided (Wragg 2003). From Wragg's point of view, good explanations can be described as clearly structured and interesting to the explainer. While good explanation can unlock understanding, poor or inadequate explanations may lead to confusion and boredom. From another standpoint, Gordon et al. (2006) are of the opinion that explanation is deemed successful if it fulfills the purpose of explanation. This implies that for an explanation to be understood, the explanation has to appear to be well structured by the explainee.