"Psycopathology of Everyday Things"

• Well designed fabricated objects should be easy to interpret and easy to use and it is suprising how many items there are out there today that have neither of these aspects.
• The correct parts must be visible and they must convey the correct message.
• The fact that I did not realize that I could switch to the next page using the right arrow key, because the down arrow key would not do so, until just now. (just throwing that out there)
• If people keep buying poorly designed products, manufacturers and designers will think they are doing the right thing.
• A good conceptual model allows us to predict the effects of our actions.
• When the number of possible action exceeds the number of controls, there is apt to be difficulty.
• Mappings follow from the principles of perception and allow for the natural grouping or patterning of controls and feedback.
• Feedback is a well known concept in the science of control and information theory.