1. The nature of the social exchange as a purchase take place
2. The functional nature of the tourism product included in the transaction
More recently, new perspectives have been introduced including those based on relationships, the co-creation of value and the recognition of intangible products. These new perspectives are based on the concept of service marketing rather than physical goods. They allow consideration of all market actors and recognize that they will have a continuous relationship with each other. This provides a more realistic approach to the tourism product as it integrates both goods and service and recognizes that tourists will purchase both as they construct a trip. This approach recognizes the tourism consumer as a co-producer of goods and delivers a marketing approach that allows interaction with the customer in a continuous process. This can then be taken a step further by viewing the tourism product as a bundle of tangible and intangible product attributes, with all products lying on a continuum between these types of attributes. The tourism product can also be viewed along a second continuum: from a single component, through a composite of components that are packaged or bundled together; to the total destination product itself. Gilbert (1990) extends these ideas arguing that the tourism product is in fact the total experience. He defines the tourism product as: