The 15-M movement seems to be at an impasse, unsure of how to make use of its multiple victories and enormous public support. To break out of this situation, numerous organizations, assemblies and collectives are repeatedly appealing to the ideal of unity (amongst the political left, the movement, the “bottom 99”) as a means of reaching the necessary levels of coordination needed for standing up to, and defeating, the government and markets. However, so far it doesn’t seem like their ideals-inspired efforts have led to any noticeable improvement in the organisational capacity of the movement. Prior to the birth of 15M, it was not uncommon to see initiatives by the political left coalescing around ideals of convergence, coordination and unity, with generally poor results. Our hypothesis is that these traditional modes of political organisation have grave shortcomings, needing urgent revision. What can we do when the old ways aren’t working anymore? Do we forfeit our experience? Go our separate ways? Surrender to the idea that revolution can only be chaotic and spontaneous? Nothing could be further from what we’re about to share here.