Marshall McLuhan (1964) argues that the power of a medium is not contained within its content but within its innate form. The often-chanted communicators' mantra "The medium is the message," was made famous by McLuhan implying that the form by which information is presented may be of greater importance to understanding a message than the content itself. Calvert (1999) suggests that children's interpretations and thoughts about a message are influenced as they use and interact with the different symbol systems of the medium. Matthew (1997) found that changing from print to hypermedia affords children the ability to interact with texts and pictures and may facilitate their comprehension and impact their attitude towards reading.