lEfT n RiGhT..

Humans, of course, are not immune to asymmetry. If you are a typical example of Homo sapiens, your right ear is a little lower than your left and your right hand and foot a little bigger than the left ones. If you are a male, your right testicle is larger and heavier - yet hangs higher - than the left one; if you are female, your right ovary probably outsizes your left one.

Beyond these anatomical asymmetries lie the curious behavioural ones. When asked to turn around, women tend to move to the left, while men rotate to the right. Language is controlled by the left hemisphere of the human brain, while spatial and emotional behaviours emerge from the right hemisphere. As you are well aware, human beings tend to have a 'favourite' hand which they use preferentially both for heavy physical tasks and tasks which require great dexterity. This favoured hand is called upon for such disparate activities as throwing, writing, bowling, punching, and performing micro-surgery. While the existence of hand preferences is common knowledge, what is less widely known is that humans also exhibit 'eyedness', 'earedness', and 'footedness' - that is, we all tend to have a favourite eye, ear, and foot.