 In the 1908 axiomatisation, the axiom is stated in much the same way, but is called there (though not in the well-ordering paper) the ‘Axiom of Choice’. However, the 1908 paper on WOT does say that the axiom provides a set (the S1) of ‘simultaneous choices’, to distinguish them from the ‘successive choices’ used in the pre-Zermelo versions of well-ordering. It is to be noted that in 1921, Zermelo wrote to Fraenkel in partial repudiation of the designation ‘Axiom of Choice’, saying that ‘there is no sense in which my theory deals with a real “choice” ’.[31]