I get the most readers of my blog on Fridays; which is the reason for this second notice.
I wrote a blog last week that will be of interest to anyone who asks this question.
I put the blog with my answer to this question on my site: Commerce, the book. I put it there because it deals with one of the implicit questions about commerce. Are there things that need change? My answer explains why I have worked with a "lefty" group for thirty years.