[Avodah] Psak about Muscovy Duck from the Rabbinical Institutefor Kosher Supervision and Research

[rabbirichwolpoe at gmail.com]

RZS 
> Without a Sanhedrin, how could the halacha have changed? Either it
> was always treif, or it's now kosher.
 
"Halachah" [or better the term "P'saq"] evolves all the time.
 
Think of the machloqes SA haRav and Siddur Harav re: tefillin on ChhM. If
one's ancestors were Ashkenazim they all wore t'fillin during ChhM until
Hasssidism and GRA changed it
 
Here's another for S'phardim re: N'filas apayim 
Hida opposes the Rema's requirement of Sefer Torah and claims n'filat
apayim does not require a Sefer Torah. But nowadays most edot mizrach
don't do n'filat apayim at all.
 
There are probably dozens of similar changes over the years. 
 
KT 
RRW 
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