In the same way, valueless data serve useful functions. By providing nonsense values that sweep appropriately through the underlying probability space, such data become indexes that provide balanced access into individual records in a database. These valueless data become keys whose precise values no user will ever want to know. However, simply from being invisibly present, they keep a database from becoming unbalanced, unwieldy, and slow to retrieve.
This blog entry similarly says nothing but I hope it provides balance and a marker in time. Most recently I have already talked too much:
14 November 2007 Confucius Institute for Business London Public Lecture: Knowledge economies in China [Podcast] [Presentation (PDF, 696Kb). The dynamic animation won't show in the PDF file but is available here]
28 November 2007 Queen Mary CGR Public Lecture: Global imbalance, global inequality [Podcast] [Presentation (PDF, 861Kb). The dynamic animations won't show in the PDF file but are available at $1-poverty and $2-poverty]