Possible Duplicate: Why don’t we just follow the shittah of Moshe Rabeinu? If the Oral Torah is Divine, how are there arguments in the Mishnah and Gemara? (I have heard this question asked ...
The final paragraph of this answer: We do have the tools to derive from the Torah what those Halachos are (Moshe Rabeinu taught them to us), but these rules are very general in nature and ...
In this answer, I proposed that since there is a machlokes rishonim on a certain issue, it counts as a safek (doubt), although the Shulchan Aruch rules strictly. DoubleAA commented, saying that he ...