To our human minds, computers behave less like rocks and trees than they do like humans, so we unconsciously treat them like people.... In other words, humans have special instincts that tell them how to behave around other sentient beings, and as soon as any object exhibits sufficient cognitive function, those instincts kick in and we react as though we were interacting with another sentient human being.
Alan CooperComputers no longer interface with humans--they interact, and the interaction will become steadily deeper, more subtle, and more crucial to our collective sanity and ultimate survival.
Alan CooperIf we want users to like our software we should design it to behave like a likeable person: respectful, generous and helpful.
Alan CooperJust how do I design if not with prototyping? An excellent question. The short answer is 'on paper.'
Alan Cooper