Although one letter shy of documeister Michael Moore’s provocative new documentary Sicko, author Jonathan Cohn’s new book Sick uses a technique similar to Moore’s: presenting real-life nightmares of people deferring badly needed medical care for serious conditions because they have no health insurance, to make a case for universal healthcare, whether via a government -run, single-payer system or through one where private plans continue to provide coverage, but are heavily regulated.