Lesson 2 ：

overacting ideas of design principals

1. the way we focus on users and tasks in HCI, not on tools and interfaces on their own.
2. the role of the interface and how it mediates between user and the task.
3. discuss different views on the user's role in the system.
4. user experience more generally and how it exists at several different levels.

established principals
fundamental building blocks of HCI, and how to build on those foundations, to do new research and new development

By focusing on the task instead of just the interface, we can come up with more revolutionary designs like the Nest rather than just iterative improvements to the same thermostats we've been using for years.

PS: HCI research methods are largely about understanding users, their motivations, and their tasks.

usefulness and usability : a map is useful but not usable when traveling

Processors : Says"bookmark", then the noting process start. Says "stop", then the noting process stop. Things goes the same with notes.
Predictors : Says "stop", I want to note the last sentence then it repeat the last sentence and Morgan defines it to be right or wrong or also gives a mark.
Participants : Says the content of the some words and gives it back to Morgan.