1 Correction to: Archive for History of Exact Sciences https://doi.org/10.1007/s00407-020-00260-1

Unfortunately, only after online first article publication, it was noticed that the first four sentences in footnote two were incorrect. They have been removed, and the corrected online version of the original article can be found under https://doi.org/10.1007/s00407-020-00260-1