P.S. One of the longstanding bugaboos in the aforementioned attacks on the surreals has been that there is no natural sine and cosine functions for the surreals. For a proof that this contention is mistaken, see Section 11 of Kaplan and the author’s recent Surreal Ordered Exponential FieldsSurreal Ordered Exponential Fields, The Journal of Symbolic Logic, 86 (2021) pp.1066-1115. [https://%20https://doi.org/10.48550/arXiv.2002.07739][1]