101 N.W.2d 918 ROBERT WALLACE CARPENTER, A MINOR, BY LEON CARPENTER, GUARDIAN AD LITEM, v. ROY NELSON. No. 37,740.Supreme Court of Minnesota. March 11, 1960. Damages — prospective damages — degree of proof required. 1. In the ordinary civil action the plaintiff has the burden of proving every essential element of his case, including damages, […]