No one can deny that the Internet has become an essential tool for survival in the modern world, but what will happen the day the network goes down? How will users react? Will chaos ensue? The answer to all these questions is in Error 404. ¿Preparados para un mundo sin internet? (Error 404. Ready for a world without the Internet?) (2021), where Esther Paniagua (Spain) has traced other examples of network failures in history, to try to imagine what will happen on the day when the Internet collapses worldwide. In conversation with Diego Agudelo, the author will talk about how this could happen and the possible consequences of such a big blackout, as well as how the Internet has become a nest of control, manipulation and disinformation (and how to reverse its self-destruction).