Think About It

Why
Thinking About It is important because the costs of building a complete UI system and the risk of failure is prohibitively high.

What
Thinking About It is a stage in task centered design that advocates that we do a preliminary analysis of our chosen features before actually constructing anything.

GOMS Analysis

 * Count keystrokes and mental operations for the tasks the design is intended to support

Cognitive Walkthrough

 * Allows us to spot places in the design where users might make mistakes