The paper explores the use of legal machines on the ‘Is’ stage of everyday life, which is comparable to customary law situations. Legal machines can be given a qualitative upgrade through artificial intelligence (AI), and situational components therefore need to be developed in a non-textual way. The limits to human abilities require the adaptation of the external components of legal machines; for example, a synthesized language should be adapted to human language, e.g., in terms of the speed of speech. AI design also affects human mentality. We therefore introduce a supplemented evolutionary process that includes machines, i.e., plants–animals–people–machines. We discuss the competencies of legal machines and the impact of the multisyntactic metalevels of law on AI.