Let us not forget that health covers all the forms illustrated, plus the 'inner world' of the individual. Of course health informatics is not seeking to capture all of these contexts and health dimensions, although the scope of some health ICT projects has seemed very ambitious in the past. Even if they are not capturing all the contexts, health informaticians and policy makers must take full account of them. Representation of information presents major challenges to computing and clinical personnel. Humans have also evolved methods to help in cognitive economy.
Diagnoses function as a means to compress information.
Returning to definitions - what looks like data can be information . Coding schemes are used to help research, resource management and more recently the clinical use of computers in health care. They might also query the efficiency of the ICT tools that are now taken for granted in many areas of work. What is the window of opportunity for a given product. Change is often characterised as a wave.