All good training systems start with reliable, single responses. These responses, which can be assessed easily and objectively, form the foundation for further training. In some sports these responses are formed into drills (such as in gymnastics or martial arts) or they are static positions (such as in ballet). And of course not all training is focused on sport – the modern way of teaching language skills is through phonics. This method teaches children to recognise basic units of language (phonemes) and combine them to form words and sentences. Again, clear and replicable basic units of behaviour that can be objectively identified.