If you arrive at the Ateneu Barcelonès and a big head with the wrinkled face of Josep Carner greets you, it is the unequivocal sign that only good, different, and exciting things can happen that evening. "Today we will let ourselves be guided by the most important and one of the most underestimated institutions of our lives: chance," proclaimed the poet and rapper Oriol Sauleda at the beginning of the show L'arrel quadrada, a heterogeneous collage of artistic actions that included readings by Enric Casasses, Maria Sevilla, and Júlia Bacardit, a fencing duel between modernists and noucentists, sonic actions by Xavi Lloses, and even a small session of choral gymnastics to the rhythm of a violinist from the Riba Orchestra.