Edith is a door-to-door saleswoman specializing in spatulas and other types of kitchenware. Edith never calls before she comes to the door of a home; she simply walks from house to house looking for a sale. On January 12, 2009, she went from house to house on a pleasant street in Urbandale. As she approached the home of Jim Crabtree, she walked up his sidewalk and pushed the doorbell located next to his front door. When her finger touched the doorbell, it gave her a strong shock of electricity. The shock was so severe it burnt her fingernail right off the tip of her finger. She went to the hospital and was treated for her injuries. She filed a negligence lawsuit against Jim seeking compensation for her hospital bill. She claimed she was an "invitee" to the property. At trial, an...