I clearly remember that bright day, after law school, when my former roommate, Jim Costello, introduced me to the Illinois Pattern Jury Instructions.Regular readers know I’ve learned the IPI to be one of the most important tools for lawyers preparing for trial or settlement. The IPI must be reviewed anew for every serious case.Consider these thoughts:IPI 15.01 — I’ve written on this before but, as it keeps coming up, an expert who merely opines something was not a “direct” cause of the injury …