http://www.oreilly.com/openbook/freedom/ch07.html
and somewhat relatedly https://web.archive.org/web/20131210155635/http://www.gnu.or...
which tend to support your point.
http://www.oreilly.com/openbook/freedom/ch07.html
and somewhat relatedly https://web.archive.org/web/20131210155635/http://www.gnu.or...
which tend to support your point.