Ah, the Mamet wit

• Jeremy Piven is too sick for Speed the Plow.

The show’s producers weren’t returning calls, but Daily Variety reached out to David Mamet, who wrote the showbiz satire and seemed skeptical of the reasons for Piven’s departure.

“I talked to Jeremy on the phone, and he told me that he discovered that he had a very high level of mercury,” Mamet said. “So my understanding is that he is leaving show business to pursue a career as a thermometer.”