Penny and Lucien have a joint love of race horses. Penny has a prize horse (named "Treasurer") and Lucien is particularly skilled in training horses. Penny doesn't have enough money to hire Lucien to train Treasurer, but they orally agree that Lucien will train and take care of Treasurer, and Penny will provide the stables, food and other care. They agree to "share in the profits" and shake hands on the deal. Treasurer goes on to win many races, and Penny shares the winnings with Lucien. Lucien becomes famous because of this success, and holds himself out to other horse owners as a famous and successful trainer because of his work with Treasurer. Lucien makes significant sums from this other work he does not share with Penny. Treasurer becomes very valuable. A visitor to the track, Eddie, is standing next to Treasurer when Lucien negligently leads him out of his stall. Eddie gets kicked, and suffers a debilitating injury; Eddie sues both Penny and Lucien for his injuries. Penny believes she is entitled to a share of Lucien's earnings as a famous trainer, and sues Lucien. Lucien believes he is entitled to a share of Treasurer's sale value, and counterclaims for his share. Use legal analysis to describe how a court should decide the case between Penny and Lucien. Who will have to pay for Eddie's injuries and why?