How bad could it be? Modelling the 3D complexity of the polarised dust signal using moment expansionL. Vacher, A. Carones, J. Aumont, J. Chluba, N. Krachmalnicoff, C. Ranucci, M. Remazeilles and A. RizzieriA&A, 697 (2025) A212DOI: https://doi.org/10.1051/0004-6361/202453066