Scientists performed experiments along California’s San Andreas Fault, an area famous for its earthquakes. Highly sensitive electrical devices are placed about one kilometer below ground in two di fferent places. The devices were able to measure even small changes in air pressure o n the Earth’...
Because we form habits, we’ll never be able to guarantee that we won’t have an “oops!” moment. Instead, designers must accept that it will happen and design for it. Whenever we have the opportunity to throw away work, the computer must allow us to undo our actions. This leads to...