Are computers on the way to acquiring “superintelligence”? Can human deliberation and decision-making be fully simulated by the mechanical execution of AI programmes? On close examination these expectations turn out not to be well-founded, since algorithms do, ultimately, have “heteronomous” characteristics. So-called AI-“autonomy” is a sensor-directed performance automatism, which — compared with the potential for ethical judgment in human “practical reason” — proves to be limited in significant ways. This is shown in some detail with reference to the idea of (...) a “digital humanism”, which was introduced by Julian Nida-Rümelin and Nathalie Weidenfeld, who argue that algorithms are useful “tools”, but emphasise — thus rejecting excessive “post-humanist” ideas about AI — that there exists a crucial difference between human action and its AI-simulation. While Nida-Rümelin/Weidenfeld´s “digital humanism” is, on the one hand, inspired by Kant’s conception of human autonomous self-determination, the concept of “structural rationality” that they advocate is, on the other hand, quite problematic. “Digital humanism”, however, can be improved as I argue — with reference to Barbara Herman’s analysis of “moral judgment” and to Allen Wood’s reflections on “human dignity”. (shrink)