The USA's "U6" measure is about 17% at the moment (http://www.bls.gov/news.release/empsit.t15.htm).
It's what you get if you include part-time workers who say they'd prefer to be full-timers. All the other measures are about 10%. So hesiod's point still stands, sorry :)

...posting here to clear my mods --- sorry, I somehow chose the wrong option from the drop-down...

The Hazlitt book is a persuasive and very readable exposition of "classical" economics.
As a counterpoint, may I recommend Paul Krugman's explanation of Keynes's General Theory? It's here. Keynes revolutionized economics by showing how Hazlitt's "broken window" isn't a good analogy for an economy in a recession.

How could you possibly make a cogent point about a scientific issue in thirty seconds?

I guess you could talk quickly. "Thereisalargebodyofevidencefrommanysourcessupport ingtheexistenceofevolutiontherealquestionishowtoex plainthatevidencedontyouagreethatDarwinsmodelprovi desa..."