The scientific community is increasingly aware of the issues surrounding reproducibility, recognizing that our understanding can evolve as new knowledge emerges. Mapping the electronic phase diagrams of superconducting materials is a crucial approach to understanding the key ingredients that enable high-temperature superconductivity. These phase diagrams often become more detailed and complex with advanced experimental methods. A notable example is the establishment of charge order in copper oxide high-temperature superconductors (cuprates) through resonant X-ray scattering at synchrotron sources. This technique revealed charge density waves (CDWs) in these materials, which can be commensurate or incommensurate with the crystal structure. The discovery of superconducting nickelates followed, and initial studies using resonant inelastic X-ray scattering suggested the presence of CDW order in the parent compound NdNiO₃. However, further investigation revealed that the CDW was not intrinsic but arose from the ordering of excess oxygen in impurity phases. These findings, reported by Kyle Shen and collaborators, highlight the importance of meticulous sample preparation and advanced techniques in advancing our understanding of superconducting materials. The results bring cuprates and nickelates closer together, as both lack intrinsic charge order in their parent compounds. The story of CDWs in nickelates exemplifies how scientists can rapidly advance our understanding of complex materials, with similar progress seen in other fields such as halide perovskites and mRNA vaccine development. The ultimate goal is to uncover the key ingredients for high-temperature superconductivity and make this field more accessible and reproducible.The scientific community is increasingly aware of the issues surrounding reproducibility, recognizing that our understanding can evolve as new knowledge emerges. Mapping the electronic phase diagrams of superconducting materials is a crucial approach to understanding the key ingredients that enable high-temperature superconductivity. These phase diagrams often become more detailed and complex with advanced experimental methods. A notable example is the establishment of charge order in copper oxide high-temperature superconductors (cuprates) through resonant X-ray scattering at synchrotron sources. This technique revealed charge density waves (CDWs) in these materials, which can be commensurate or incommensurate with the crystal structure. The discovery of superconducting nickelates followed, and initial studies using resonant inelastic X-ray scattering suggested the presence of CDW order in the parent compound NdNiO₃. However, further investigation revealed that the CDW was not intrinsic but arose from the ordering of excess oxygen in impurity phases. These findings, reported by Kyle Shen and collaborators, highlight the importance of meticulous sample preparation and advanced techniques in advancing our understanding of superconducting materials. The results bring cuprates and nickelates closer together, as both lack intrinsic charge order in their parent compounds. The story of CDWs in nickelates exemplifies how scientists can rapidly advance our understanding of complex materials, with similar progress seen in other fields such as halide perovskites and mRNA vaccine development. The ultimate goal is to uncover the key ingredients for high-temperature superconductivity and make this field more accessible and reproducible.