ach of us ‘gets’ information in different ways, with varying degrees of benefit depending on the specific medium. The senses are different in their ‘efficiency,’ ‘learning’ and ‘retention.’ As it is, only a relatively small proportion of what we sense, whether by hearing or sight, is retained accurately or usefully.

For some, the written word is the most effective. But it doesn’t stop there. Some people, looking at printed material, acquire better understanding from charts, graphs, diagrams or photographs (“a picture is worth a thousand words”). Others ‘get’ more from other visual media.