Steven Sasson, inventor of the digital camera, says to inventors:
The key when you’re putting across an idea is: You have to understand the culture you’re dealing with first and foremost. And put everything very much like the culture is used to and then put your own idea — only the essential elements of your idea out there — so it doesn’t get confused with things that might complicate the concept.
Well put. Next time, note the sound your mobile phone* makes when you lock its screen or click a picture.
(*example only works with few phones.)
Link via John Gruber.