The notion of complete positivity as a fundamental condition for open quantum dynamics is being challenged. Researchers are reexamining the physical motivations and limitations of this requirement, which has significant implications for quantum computing and cryptography. By analyzing proposals that restrict non-completely positive maps to specific subsets of initial states, such as isotropic states, they are exploring alternative approaches to open quantum dynamics1. This critique has the potential to reshape the understanding of quantum systems and their interactions with the environment. The relaxation of complete positivity could lead to more accurate modeling of real-world quantum systems, which is crucial for the development of reliable quantum computing and secure cryptographic protocols. So what matters to practitioners is that this reevaluation could ultimately impact the design and implementation of quantum technologies, forcing a reassessment of existing assumptions and methodologies.