Prototypes some considerations Successive refinements of user needs User specifies needs Designer Tempers expectations Basic prototype cost established Simpler interactive prototype built.
Prototypes baadhi ya masuala Mfululizo refinements ya mtumiaji mahitaji ya mtumiaji bayana mahitaji Designer Tempers matarajio Basic mfano gharama imara Rahisi mwingiliano mfano kujengwa.