A circular argument is invalid by definition.
Patrick D. Bunt
pbunt@indiana.edu, patrickb@io.com
812-857-7149
http://copper.ucs.indiana.edu/~pbunt/index.html
"Most people who criticize Karl Marx have not read his works. Of course,
most people who support him have not read his works either. This guy writes
a nine hundred page treatise on economic theory and calls it Volume One,
it's a wonder anybody has read his works."