Ruby Booksales Grow At 53%: Glass Half-Full or Half-Empty?

Tim O'Reilly posts his always-intriguing quarterly analysis of the tech book sector.

Joe Gregorio interprets the 53% growth in sales of Ruby-based books as evidence that there is no "next Java" or "next framework." I'm sympathetic with his thesis, but I'm not sure that 53% growth counts as any kind of failure...