
You know what took forever?
We had great up front specs - good mockups - solid description of interaction models - some of the most complete specs I've ever seen.
However, its take so long to get the "feel" right. The little bits of timing and transitions you can't really capture in a paper specification (or even prototype).
Learned a lot there
"Whenever you find you are on the side of the majority, it is time to pause and reflect" --Mark Twain
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." --Albert Einstein
"This is still a dangerous world. It's a world of madmen and uncertainty and potential mental losses." --George W. Bush