Did the Committee on Pattern Jury Instructions in Civil Cases break what wasn't broke with a 2006 IPI revision? That's what Dan Wurl asks in the latest Tort Trends. The Illinois Pattern Instruction in question is Civil No. 105.01, “Professional Negligence—Duty.” And here's how Dan ultimately answers his own query: "The Committee went from two relatively straight-forward, seemingly non-controversial jury instructions in IPI 105.01 and 105.02 (2005) that had withstood the test of time to a 2006 version that has quickly become the source of appeals and uncertainty as to what version of IPI 105.01 accurately states Illinois law." Read his analysis.