In essence, critical thinking is the act of in-depth analysation. In order to analyse we must identify the aspects of an artefact that define it (Clarke, 25); its distinguishing features, origins, and the intent behind its creation (Ruszkiewicz, et al., 32). These aspects are what form the context of a visual text. Without context, a subject is less understandable. When we are provided with the context of a subject we are given background information, and can therefore form new opinions based off the way this information has changed our view of the subject (Clarke, 25).