One of the things that’s commonly imagined is that indexing is, in the age of Google, something that can be outsourced to a computer algorithm. Dead wrong. A concordance – essentially, an alphabetical list of all the words in a book with page references – can be done by a computer. But an index, to be useful, needs to be done by a human. In a book about the Middle East, say, an entry that said: “Syria 2, 3, 5, 6, 7, 10, 23, 25, 26, 27 … ” would be no use at all.