Lubrizol Corp. v. Exxon Corp.

How later courts describe this case

• recognizing proving causality is difficult but nevertheless requiring plaintiff to produce more than “naked assertion” that assault would not have occurred but for alleged overcrowding
• jury verdict should be set aside when "instructions, viewed as a whole, were confusing, misleading, and prejudicial."
• “ ‘[p]risons are dangerous places’ and a certain degree of violent behavior is unavoidable”
• ad dressing whether parties added by an amendment must or should have known that, but for a mistake concerning identity, the action would have been brought against them within the period of limitations