[...] As Marx argues in Capital, the ‘worker emerges from the process of pro­duc­tion look­ing dif­fer­ent from when he entered it’. Starting as a seller of their own labour power, the workers come to the conclusion that they ‘have to put their head together . . . as a class’ so ‘they can be pre­vented from sell­ing them­selves and their fam­i­lies into slav­ery and death by vol­un­tary con­tract with cap­i­tal’. For Tronti this is ‘a political leap’, and ‘it is the leap that the pas­sage through pro­duc­tion pro­vokes in what we can call the com­po­si­tion of the work­ing class or even the com­po­si­tion of the class of work­ers’.