¿Sangre o kétchup? Transubstanciaciones by Emilio García Wehbi (Argentina) and José Alejandro Restrepo (Colombia) is the first book in the collection entitled ''Acciones de escritura'' published by Ediciones DocumentA/Escénicas. Born from a piece that premiered at BP17, this mise-en-scène takes place inside a device similar to a book: it showcases an experience of live assembly using images proposed and associated by both artists to generate a collision of perspectives and readings. The action articulates with the commotion created in García Wehbi and Restrepo by a statement made by Marina Abramovic: ''The difference between theater and performance is that in performance, blood is blood, and in theater, blood is ketchup''. From this perspective, both artists focus the dialogue on the tension between the real and the fictional in art, and reality in the times of ''post-truth'', transversally exploring art history, their own artistic experiences and the narration of reality by the mass media. What is real can -and usually does- become fiction, and vice versa; the premise based on which the limits separating real from symbolic have blurred and/or changed, feeding off each other, transubstantiating themselves to generate dilemmas between representation and presentation. In this book, every action is a thought that is embodied based on each montage of images.