 It has been claimed that the laws of physics are fine-tuned for life not only with respect to the constants that appear in them but also with respect to their form itself. Three of the four known fundamental forces—gravity, the strong force, and electromagnetism—play key roles in the organisation of complex material systems. A universe in which one of these forces is absent—and the others are present as in our own universe—would most likely not give rise to life, at least not in any form that resembles life as we know it. The fundamental force whose existence is least clearly needed for life is the weak force (Harnik et al. 2006). A universe without any weak force but with all the other forces of the Standard Model in place and suitably adjusted might be habitable (Grohs et al. 2018). Further general features of the actual laws of nature that have been claimed to be necessary for the existence of life are the quantization principle and the Pauli exclusion principle in quantum theory (Collins 2009: 213f.).