Human-Product Communication - Emotional Engineering - page 17

Fig. 4 Action-reaction
Fig. 5 Communication
12 Hardware and Software
12.1 System Development
As hardware products cannot change its attributes, once they are developed (this
situation is quickly changing as describe in Chap. “ Age of Subjective Engineering ” ,
hardware is developed with ! fixed functions.
Software used to be developed in the same way. But we soon realized that
software and hardware are completely different. So software introduced the
development style called continuous prototyping (Fig. 6 ) .
Software developers provide the basic functions ! rst and as users get used to the
system, get con ! dent and calls for higher functions, they provide little higher
functions. Thus, functions grow with time and software systems are customized.