34 Per massimizzare l'efficienza di un'organizzazione si deve massimizzare l'efficienza di ognuno, non solo di un particolare gruppo di lavoro


Sintesi del contesto di applicazione
Situazione: l'interfaccia ha subito revisioni o modifiche
Problema: una nuova funzione o un nuovo sistema penalizza il processo complessivo.		 Accorgimenti in sede progettuale: Verificare il raggiungimento dell'obiettivo anziché la sola performance del sistema

Stato dell'analisi Tema complesso. Da rivedere, con particolare riferimento alle interfacce di processi composti da più fasi consecutive.


Applicazione del principio:  (analisi in fase di completamento).

Enunciato originale del principio Large organizations tend to be compartmentalized, with each group looking out for its own interests, sometimes to the detriment of the organization as a whole. Information technology departments often fall into the trap of creating or adopting systems that result in increased efficiency and lowered costs for the information resources department, but at the cost of lowered productivity for the company as a whole. It is your job to run the studies that prove out whether new designs based on new, money-saving technologies will increase or decrease overall productivity among the affected workers and, if so, by how much and with what result to the corporation’s bottom line.
Work with HR or department heads to find out the average cost per hour of affected employees. (An honored rule of thumb is to take their hourly wage and multiply it by three to include all the other overhead associated with an employee, from rent to heat, lights, computer support, etc.) Multiply the overhead cost x the number of affected employees x the time an activity takes x the difference in productivity, positive or negative, in carrying out the activity to find the actual cost of a change. A positive number will help you sell your group and your design. A negative number will help your company from making a costly mistake.
(fonte: Bruce Tognazzini, First Principles of Interaction Design)



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