3. Be explicit about who you are building the system for
I have not yet run across a prototype or a product that does not have a producer and a consumer. Nor have I seen one yet that works for everyone on this planet.
Sometimes walking around the apple store, do you really want to know?
It might be for your annoying nephew, the one who changes technology like underwear. It's not for you, the one who keeps the same phone for 10 years. :)
Right? Funny thing is my annoying nephew’s eyes can see the small text on that new iPhone without adjusting the default font. I of course have to. But at least I’m not color blind.
I have not yet run across a prototype or a product that does not have a producer and a consumer. Nor have I seen one yet that works for everyone on this planet.
Chapanis 1996 might be a good read.