Char Hilgers is a PhD student in Sociology at the Humboldt University's Berlin Graduate School of Social Science, funded by the Socio-Economic Panel at DIW Berlin. Their research focuses on statistical techniques for nonresponse in survey settings, in particular when missingness means something. They are interested in refusal, misdirection, and obfuscation in survey settings, and ethical dilemmas around these. They hold a Master's in Industrial and Applied Mathematics and a Bachelor's in Pure Mathematics, and they have worked as a data scientist in forest monitoring, epidemiology, and supply chain forecasting.