By T.J.HOGAN I.R.THOMAS
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Extra resources for AISC - Design of Structural Connections 4th 1994
They can’t be addressed by engineering methods, either. The skilled engineers who manufacture microwave ovens typically consult with human-factors experts to design the buttons so they are easy to see and press. But the human-factors experts are merely adapting the buttons to the user’s eyes and fingers, not to their minds. Consequently, microwave ovens don’t have much “friction” but have a lot of cognitive friction. It is easy to open and close the door and physically press the buttons but, compared to the simplicity of the task, setting the controls to achieve your goals is very difficult.
Consequently, microwave ovens don’t have much “friction” but have a lot of cognitive friction. It is easy to open and close the door and physically press the buttons but, compared to the simplicity of the task, setting the controls to achieve your goals is very difficult. Getting the microwave to perform the work you intend for it is quite difficult, though our general familiarity with it makes us forget how hard it really is. How many of us have cooked something for one second or one hour instead of for one minute?
Later in this book I’ll show how a better development process makes users happier without the extra work of adding unwanted features. What Do You Get When You Cross a Computer with a Car? A computer! Porsche’s beautiful high-tech sports car, the Boxster, has seven computers in it to help manage its complex systems. One of them is dedicated to managing the engine. It has special procedures built into it to deal with abnormal situations. Unfortunately, these sometimes backfire. In some early models, if the fuel level in the gas tank got very low—only a gallon or so remaining—the centrifugal force of a sharp turn could cause the fuel to collect in the side of the tank, allowing air to enter the fuel lines.
AISC - Design of Structural Connections 4th 1994 by T.J.HOGAN I.R.THOMAS