Oracle Database Training

I just finished the second of two days of Oracle Training Days in downtown Denver. In all I was impressed; I attended the following presentations:
Agile Methods and Data Warehousing: How to Deliver Faster, by Kent Graziano. Kent is a good speaker, but he ran long. I found myself nodding my head (in agreement, not sleepiness) often. He reviewed the agile (lowercase "a", in his words) manifesto and how it applies generally to data warehousing. The question he did not answer, and no one has answered, is how one solves the re-factoring problem. Re-factoring Java code, for example, is very easy with the available tools, making the price of change low and therefore the price of early, incomplete delivery low.