Writing about that recent Associated Press-Ipsos poll on the number of books Americans read in the previous year, San Francisco Chronicle columnist Debra J. Sauders pounced on how AP reported the findings – specifically, that "liberals read more books than conservatives": The poll found that among people polled who read at least one book in the last year, liberals read nine books and conservatives read eight.When I called Michael Gross, associate vice president of Ipsos public affairs, to find out more about the Ipsos poll, he told me the one-book difference "is within the margin of error, it's not a...