"Adobe Day" presenter, Mark Lewis, contrasts traditional productivity (pages per day) metrics with new metrics and metrics critical to project success. His research reveals how to determine the true cost of a DITA task or topic, and also how that cost is reduced over time with constant re-use. Many concepts shared may be found in Mark's new book (published by the Rockley Group): "DITA Metrics 101: The Business Case for XML and Intelligent Content".