*Charles Stross has done an analysis of the economics of star flight and came to...

Charles Stross has done an analysis of the economics of star flight and came to the conclusion that interstellar travel makes no sense at all. http://www.antipope.org/charlie/blog-static/2007/06/the-high.... It may not be possible at all.

From the article you linked to: "This is not to say that interstellar travel is impossible; quite the contrary."