bq.Sometimes librarians think a book that hasn’t been checked out in decades is seldom used. But many books are consulted in the stacks without being borrowed; if those books are not there, they will have to be obtained by more labor-intensive and costly methods. Most of my discoveries as a researcher come from the efficiency of being able to spend 10 seconds glancing at the contents of nearby books instead of having to make an elaborate and time-consuming plan to track down tangential leads. – “Thomas H. Benton(Stacks’ Appeal)”:http://chronicle.com/temp/reprint.php?id=0gixexfr1qnuloqnx6pvokmo3ek5o8np He makes a lot of other points as well, not all of which I agree with. But I thought this paragraph was the most important.