After having understood what consumer experience is and after having investigated the role of the environment on the consumer's behavior through the mediation of emotion, and having understood what is consumer immersion, and how it is possible for a consumer to be immersed into the experience, progressive or in an immediate way. We are now in a moment to stop and focus on what is the role of the consumer and the firm and what is the role of the market? We are now entering in the general construct developed by Prahalad in 2004, which is the co-creation of value. So in the theory developed by Prahalad in 2004 of the co-creation, they start considering the role of the firm and the role of the consumer in the traditional market as two entities with different roles. The firm creates the value. The consumer is nothing else but the target. The consumer is not taking part to the value creation, and to the experience together with the company. They are separate. If we consider the value creation developed by Porter in the 1980s, we understand immediately that there is a distinct role played by the consumer compared with the role played by the company itself. Therefore, now we are at a point that asks us to consider the important role of the market. The role of the market, in the traditional way, is nothing else but the exchange of goods and/or services. A company provides something, consumers buy, experience, and consume. Prahalad says something different. Prahalad said that the market needs to be considered as, not only the place to generate interaction and extract experience, but the place where the experience is co-created by the two important players of this role in this game. Company on one side and consumer on the other side. Prahalad then said something more. How can we create, how can we elicit the co-creation of experiences, the co-creation of value? There are four steps that are alternative in a way that Prahalad suggested to consider. First of all the dialogue, so it is important and there is a dialogue between the producer and the consumer. So firm and customer. Access to the information, we cannot co-create if we do not allow our consumer to be part and to access to the information the company is generating. Risk assessment, so there is a sort of disclosure of the risk that this co-creation is taking into consideration. Just to make an example, the co-creation website that we use when we buy a holiday or when we book a hotel. The consumer is co-creating the overall value by simply commenting, sharing their information, and expressing his or her own opinion. When I, as a second customer, enter the website, I trust the opinion of my colleague, the person that went to that hotel before. And the value that the website has generated is not only provided by the company itself, but also by other consumers that are co-producing the value that another consumer, in this case me, is enjoying. So dialogue, access, risk assessment, and the finally transparency. There needs to be complete transparency between the roles played by the two actors: consumers and producers. There needs to be complete transparency between the roles played by the two actors, consumers and producers. Well, now we are at the point of shifting this construct into culture, arts, and heritage. Well, now we are at the point of shifting this construct into culture, arts, and heritage. Why does a museum, for example, need to generate and stimulate co-creation? First of all, because the museum needs to give space for interaction. It needs to convey a message of engagement between the explainer of the cultural message, which is the management staff, and the consumer, the visitor. Then there is another element that is quite important, it is that the museum needs to provide education, provide the development of skills. This is possible only with a complete and continuous exchanging of relations, ideas, opinions, and improvements; giving importance and acknowledging the role played by the consumer. Staying with the context of a museum there was a book that was recently published called "Participatory Museum" that explained, very clearly, what a museum can do in order to exploit, elicit, and create this sense of co-creation. The book considers that the visitor can be involved in four different relationships. One is the simple contributor, so the consumer the visitor of the museum is asked to provide some content, provide a customer satisfaction journal at the end, provide a like on Facebook, or in some cases retweet some information that is particularly important. Then we have a second step, which is collaboration, when the visitor is playing an active participation in a specific project. So, after contribution, where the museum controls everything and the contribution, therefore, is external. After the collaboration we arrive to the third element, third example of co-creational value that the museum can elicit in the consumer relation, which is co-creation. Co-creation is when a consumer, visitors, the friends of museum, for example and the institution itself are playing together on a role in the agenda of the museum, in the list of exhibitions, in the activity that the single exhibition can provide. Then there is a fourth element, which is hosting. What is hosting? Hosting is nothing else but hosting, inside of the museum, something created directly by the consumer and the visitors. It is important, after the list of these four alternatives, to consider that they are not in a ranking. We do not want to consider hosting better than co-creation or collaboration better than contribution. The idea that Simon, in "Participatory Museum," wants to provide is stimulation to the museum to start small, start providing all the tools that the company, that the consumers can exploit in order to start engaging themselves with the offer that the museum or the cultural institution is providing. It is a sort of guide that each museum should consider in order to apply, in practice, what Prahalad and Ramaswamy said when we started talking about co-creation, and to generate an increased value that can be beneficial for the overall experience of the visitors.