Changing the canon — or even a proliferation of canons, as literary studies has fractured into a collection of increasingly well-defined subfields — takes us only so far. Readers are finite creatures, capable of making their way through only a tiny fraction of the millions of books published over the centuries. The problem, at this sort of scale, has less to do with canonical selection bias than it does with our inevitable ignorance of nearly everything that has ever been written. It’s one thing to claim that a particular book was influential in its day (though influence is a tricky matter, more sociological and economic than literary) or that a text has been treated as important in subsequent scholarship. It’s something else entirely to argue that the same book is “representative” of a genre’s or an era’s output, especially when even the best-informed critics have read almost none of the material in question.