Quite.

John Quiggan has one of the better responses, and lists others:

https://johnquiggin.com/2011/04/16/i-pencil-a-product-of-the...

Also at Crooked Timber, with extensive comments, some Worstall than others:

https://crookedtimber.org/2011/04/16/i-pencil-a-product-of-t...

Nabokov's response (similarly titled "I, Pencil"): https://crookedtimber.org/2011/04/16/i-pencil-a-product-of-t...

"I, Residential Mortgage-backed Security Collaterialized Debt Obligation."

https://crookedtimber.org/2011/04/16/i-pencil-a-product-of-t...

The Freakonomics critique is weaker, but not bad:

http://freakonomics.com/podcast/i-pencil/ https://crookedtimber.org/2011/04/16/i-pencil-a-product-of-t...