skripka:
“The point I was making about converts ws that according to what @UJM said, there should be a genetic change when someone becomes a Jew, That is to say, a doctor who is treating a recent convert shouldn’t assume that what worked earlier would work now, because the man has changed from Non-Jew to Jew.”
I said no such thing. The Gemora clearly said it is related to the gentiles having a different diet than Jews. Therefore, you certainly cannot assume a convert has the same medical status as a Jew. In fact, as the Chasam Sofer said, it is a generalization — not a hard and fast rule. You simply can’t *assume* that what worked for a Goy will work for a Yid.
“I am absolutely certain that I can find certain things you do that would be deemed apikorsus by somebody….”
Don’t be so certain. Certainly not by anyone of any authority. It simply isn’t the case
And none of your examples (wrong havara/pronunciation, Zman Tefila) carry the severity of rendering a person an apikorus and thereby forfeiting his chelek in Olam Haboah.
Would you eat some unknown substance if some medical authorities maintained that it is likely to kill you within three months of digestion — if another medical authority asserted it was completely fine to eat?
(And that’s before even getting into the fact that the consensus throughout the centuries of Tannaim, Amoroim, Rishonim and Achronim is that such a belief renders one an apikorus, yet you rest your eternal future on one Rishon (Reb Avrohom), where he is a daas yochid on an issue that the full corpus of Rishonim and Achronim never really even dissected his comment throughout the subsequent Seforim HaKedoshim. It, effectively, was a buried daas yochid until Mr. Slifkin trotted it out to defend his own apikorsus. History has proven correct the Gedolei Yisroel who declared Slifkin to be an apikorus, as Slifkin today is an open apikorus, who for the last decade plus is engaging in clear, open and unabashed mevazei talmidei chachomim on a daily basis.)