I'd be interested to know if they did any usability tests and what the results were. Even just the basic cheap usability tests like describe in Don't Make Me Think.
If anyone has any information on their testing process, please share!
You don't make leaps like that with "usability testing".
Despite a few obligatory niggles the design is a masterpiece, obviously coming straight out of the heads and hands of a few (or even a single) gifted individuals.
If anyone has any information on their testing process, please share!