Law is presented as a dynamic universe, a cultural manifestation that mutates as social relations become increasingly complex; ergo, his practice too.
In recent years, a growing phenomenon in arbitral practice has been seen, namely the attempt to challenge an arbitrator on the basis of a friendship with one of the parties, which, in his opinion, jeopardizes the equanimity of the judiciary.
It should be noted that this paper does not intend to analyze the legitimacy of the figure generating this analysis (challenge for friendship), but rather, to delimit its scope, so that it does not become a “guerrilla tactic” tending to hinder and delay arbitration.