[書評]Ann Blair, Too Much To Know: Managing Scholarly Information before the Modern Age, xv+397pp, ISBN: 978-0300112511, New Haven: Yale University Press, 2010, $45.00 (cloth), $25.00 (paper) / David Weinberger, Too Big To Know: Rethinking Knowledge Now that the Facts aren't the Facts, Experts are Everywhere, and the Smartest Person in the Room is the Room