1.   Task analysis, in common with every other perceptual process, is a matter of setting up mechanisms for categorisation and filtering.

2.   The identification of the sub-tasks which are appropriate for intensive training with feedback is achieved by task analysis.

3.   There is an inherent difficulty in that often the main dividend from a task analysis is from the act of obtaining it.

4.   Human error identification techniques include task analysis or reference to checklists of potential human errors.