 Now I'm going to talk about our recently published paper, The Bright Side of Societal Cheaters, Potential Beneficial Roles of Societal Cheaters in Microbial Communities. The phenomenon of social cheating is well known in bacterial population and in micro-populations. And this happened when there is a cooperative behavior, for example, the production of public goods like cider or horse of exo-proteins by some of the members of the community. However, there are other members that sometimes they don't produce these products but enjoy the benefits and they these are the social cheaters and if they accumulate, they may lead to a decrease in the population growth and even to a population collapse that is also known as a tragedy of the commons. However, there are many examples that we review in this paper in the literature indicated that at least a moderate amount of these social cheaters can be beneficial. For example, a microbial communities are sometimes very complex and some individuals that do not cooperate for the production of one cooperative behavior or try to cooperate for another one and hence they are not so true social cheaters. Another example is the optimization of resources. This happens when the production of the cooperative behavior is very costly and is produced in an excess. Hence decreasing its production with the social cheaters present in the community may redirect the useful resources and energy for the generation of more biomass and then make a more robust community. Another example is the protection against the stress. It's well known in some bacteria, like seromonas aeruginosa, that social cheaters are also sensitive to stress. Then if a stress comes to the population, they may die preferentially and will release some important nutrients or metabolites like extracellular DNA that may protect the population, for example, enhancing bio-information. Another beneficial role is the modulation of viral insulin infection that will allow the population of the bacteria or the microbe to achieve a chronic infection by decreasing the response of the immune system against. And finally, another example is the coexistence with other bacterial species, that is also was known for seromonas that in the presence of seromonas cheaters, it allow another bacteria like hordelia to persist in the same community making a more diverse community. Thank you very much.