One practical realm in which this comes up: how long a webpage (seems to) take to load. How are programmers designing tricks to make this seem faster? Do animations help or not help? Check out the article in Wired.
Francis Crick, one of the premier biologists of the 20th century, passed away July 28, 2004, in San Diego. On his 88th birthday, I brought him chocolates and spent the day with him in his home in La Jolla.