Do you think of Chicago as an oil and gas town? Dallas, yes; Houston, for sure; New Orleans, uh-huh; maybe Bismarck, North Dakota (for the shale gas); and perhaps even New York (because of trading oil futures on the NYMEX).

Chicago? Meh.

But wait up. Today Judge Richard Posner wrote about oil and gas leases.

Mark Twain said the difference between the right word and almost the right word means the difference between "lightning" and "lightning bug".

Tell that to the Andersons of Mountrial County, North Dakota. The family lost a case because "drilling" doesn't mean the same thing as "drilling operations".

On May 3, 2004 and May 10, 2004, they