Oral-history interviews have well-known disadvantages. In particular, interviewees' memories of events, especially of specific events long in the past, may be fallible, and they may wish a particular version of events to be accepted. In consequence, I have tried to "triangulate" as much I can, checking one interviewee's testimony against that of others and (where possible) against the published record or econometric analyses of the markets they were describing. In the case of Long-Term Capital Management, for example, I checked for any "exculpatory" bias in insiders' views of the fund's 1998 crisis by interviewing others who had been active in the same markets at the same time.

Donald MacKenzie, An Engine, Not a Camera, loc. 127