They are generally easy and enjoyable to use

smartphone is an example of products that have not necessarily been designed with users in mind

to develop interactive products we need to be able to understand how to
reduce the positive aspects of the user experience,
and enhancing the negative ones

speech-based systems is an example of

commands is an example of

handheld is an example of

send messages is an example of

forms is an example of

wearables devices is an example of

icons is an example of

gather information is an example of

menus is an example of

A key question for interaction design is:
“How do you optimize the users’ interactions with a system,
environment, or product so that they support the users’ activities in effective, useful, usable and pleasurable ways?”

interaction design is defined as:
Designing interactive products to support the way people
communicate and interact in their everyday and working lives

......... is
generally used as the overarching term to describe the
field, including its methods, theories, and approaches.

single-minded teams are the teams where the skill sets of engineers, designers,
programmers, psychologists, anthropologists, sociologists, marketing
people, artists, toy makers, product managers, and others are drawn upon

In practice, who to include in a team will depend on a number of factors, including a
company’s design philosophy, size, purpose, and product line.