An intriguing element about language is the disconnect between its theory and practice. The theory of language can be reasonably straightforward and understandable as it is studied on paper : Language in practice and in day-to-day terms of usage can be a lot more tricky. In Australian contexts, there are idiomatic factors of expression, the way words are emphasised, nuances, hidden messages, the use of colloquialisms (expressions) and so on. As well there is pitch, rhythm, tone, intonation and volume.
Of particular importance when communicating is to look at people with whom we are talking. Eye contact is an indicator of confidence. To speak with eyes averted and not to look at people to whom we are talking is taken to indicate alack of confidence, to be unsure of what we are saying or similar. It is a negative indicator. Similarly, if talking with a group, it is important to include everyone within the ‘eye contact’ circle.