That’s how long visitors will spend deciding whether to explore your web site, read your magazine, order your product–or to move on.*
It’s my business to know what those people are thinking.
requirements and constraints,
What is the problem?
usability testing, pencil sketches,
rounds of iteration
Visual design comps and layouts.
What things look and feel like is the last thing to do, after the strategic work.
* Jacob Nielsen, How long do users stay on web pages?