13. Version and Change History:$Id: cathedral-paper-13.html,v 1.1 2001/07/15 22:25:46 ry4an Exp $I gave 1.16 at the Linux Kongress, May 21 1997.

I added the bibliography July 7 1997 in 1.20.

I added the Perl Conference anecdote November 18 1997 in 1.27.

Other revision levels incorporate minor editorial and markup fixes.