Everything around us provides clues about how our environment works. Some are more effective than others. The scavenger hunt gives all sorts of examples of the success & confusion that environmental cues can give. Usability is simply good logic, but it often takes a real live human to experience the user scenario and call out the issues, or success!
The hunt began on Wednesday, Nov. 9 at 6:00 am (PST) and continued through 6:00 pm (PST) on Thursday, Nov. 10.