The accounts are swept for irregularities every evening at the bank’s closing. The computer programs are impressive in that regard—sophisticated, sensitive—and their algorithms are able to identify irregularities with a high level of certainty. But a computer is only half the story. A human has to see it. A human has to be assigned to look at the readouts, examine the data more closely, double-check it, trace it back, put two and two together.

Jonathan Stone