PT - JOURNAL ARTICLE AU - Robert N Proctor TI - “Everyone knew but no one had proof”: tobacco industry use of medical history expertise in US courts, 1990–2002 AID - 10.1136/tc.2004.009928 DP - 2006 Dec 01 TA - Tobacco Control PG - iv117--iv125 VI - 15 IP - suppl 4 4099 - http://tobaccocontrol.bmj.com/content/15/suppl_4/iv117.short 4100 - http://tobaccocontrol.bmj.com/content/15/suppl_4/iv117.full SO - Tob Control2006 Dec 01; 15 AB - Historians have played an important role in recent tobacco litigation, helping the industry with its defence of “common knowledge” and “open controversy”. Historians re-narrate the past, creating an account for judges and juries that makes it appear that “everyone has always known” that cigarettes are harmful, meaning that smokers have only themselves to blame for their illnesses. Medical historians are also employed to argue that “honest doubts” persisted in the medical community long past the 1950s, justifying as responsible the industry’s longstanding claim of “no proof” of hazards. The industry’s experts emphasise the “good science” supported by the industry, and ignore the industry’s role in spreading doubts about the reality of tobacco hazards.