Jumping from theory to reality in a novel way, the Chicago School then asserted that that which did not exist in theory probably did not exist in practice. Robbing banks is economically irrational, given security guards and meager returns; ergo bank robbing does not happen; ergo there is no need for the criminal law. Exaggerated only slightly, this premise has been at the core of Bork-Chicago antitrust for more than thirty years.
