"To have an opinion, in other words, the distance needed to grasp the common essence at a time when we're all in the grip of social networks. What a challenge! Is it measurable? Not as such. Hence the doubt. Could we speak the same language? [...] Indeed, the opinion we express about a person, a living being, a phenomenon or a fact is generally considered to be "bona fide". We believe we have control over the opinion we express. Frequently, in the illusion of knowledge, ignorance of the facts generated by social networks (the Internet user).