Nowadays, from a spaceship to a microwave or even a cell phone, pretty much everything we use on a
regular basis runs on a CPU (Central processing unit) using a software, designed and implemented to be
as intuitive and reliable as possible and human-computer interaction is the science that made it possible.
From a home cook with no experience in computing, to use his over-equipped kitchen to helping and
supporting humans in a field such as aviation and medicine, where human errors can be catastrophically,