Jacqueline is a home stager. Majority of her work is in rearranging furniture and pieces that the homeowner currently has so that the house will show in the best way to potential buyers. Many have tried to duplicate her work, but they don't deliver the high praise that many homebuyers give for Jacqueline's staging, which is why they often call her to decorate their home after they purchase homes that she has staged. The experience of Jacqueline's work speaks to which characteristic of a service?