“…I am grateful for discussions, mostly by e-mail, with Marek Abramowicz, Brandon Carter, Gregory Cook, Fernando de Felice, Valeri Frolov, Eric Gourgoulhon, Pawel Haensel, Werner Israel, John Leibacher, Frank Pijpers, Fred Rasio, Oldřich Semerák and Saul Teukolsky. Semerák corrected a missing 2 in equation (199) and sent me a closely related manuscript [38], enabling me to add nine references and correct two others. Pijpers kindly sent me his manuscript [42] with the latest solar data.…”