Link in Freakonomics to Lost Legacy's Paper on the Invisible hand

In Freakonomics (HERE) they ask:

Is the Invisible Hand …

“… one of Adam Smith’s key theories, a “mildly ironic joke,” or “a popular literary 17th- to 18th-century metaphor with no significance”? Arguing for number three, Gavin Kennedy keeps the debate alive, in a new paper published in Econ Journal Watch.”

Comment
Thank you, Freakonomics for the link.

Read some of the comments as well.