Questions about theoretical issues about psak and general halacha concepts

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68 views

minhag means law? when in shulchan aruch

When the Ramo writes and "so is the custom (vchain nohagin)" do we understand that to mean that this is his ruling regarding the law or that he is not giving his opinion about the law but is just ...
3
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1answer
168 views

Why is asking a non-Jew to turn on electric lights considered amira l'nochri?

Given that practically all poskim accept R' Shlomo Zalmen's view that electricity is d'rabbanan over the Chazon ish, I would think that a Jew could simply ask a non-Jew to turn on/off lights on ...
3
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2answers
164 views

Schrödinger's cat and yibbum

Over Shabbos, the Shalosh Seudos discussion turned to the Monty Hall problem, which confused a lot of people [and which (#Humblebrag) I was able to clear up for them in under 30 seconds ;)]. Then, ...
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0answers
46 views

Tosefta vs. Toras Cohanim

This past Shabbos someone said over to me a particular sugia they were learning in Taharas and a maklokes Rishonim (an argument between Rishonim, medieval rabbis) in a particular analysis. One Rishon ...
3
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1answer
155 views

Who needs a fence around their roof?

I recently called an exterminator to remove a hornets' nest in a tree overhanging my roof. Since my roof is slanted, with no direct access to it, and it starts at about 9 feet off the ground and peaks ...
2
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1answer
37 views

Why did the people have to respond twice “It is sanctified” when Sanhedrin declared Rosh Hodesh?

Ramba"m (Maimonedes) Hilchot Kid. Hachodesh 2:8 says: Afterwards - i.e., after [the witnesses'] testimony is substantiated - the head of the court declares, "It has been sanctified." And all the ...
2
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1answer
55 views

What do we do with Chazaka's that don't seem to hold?

Inspired by this comment, there are Chazaka's (presumptions) and principles of נאמנות (trustworthiness) in Halacha that no longer hold in our practical experience. One example is עד אחד נאמנן ...
2
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1answer
182 views

If the Oral Torah is Divine, why are there arguments? [duplicate]

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 ...
2
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1answer
126 views

What is the source for “the custom of our forefathers is in our hands”?

Where does "minhag avoseinu byadeinu" as a halachik concept, which is commonly cited as the source for keeping two days of yom tov outside of Israel, originate from?
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2answers
301 views

How can we use grape juice instead of wine?

There are many rituals for which we use wine. I would think that wine means a fermented grape product, or at least a fermented fruit product. On what basis do so many people use grape juice instead of ...
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1answer
90 views

why is flatulence forbidden in tefillin and during prayer

Why is flatulence forbidden in Tefillin and during prayer? Is it because partials of the feces get stuck to the body so now you do not have a clean body? or what?
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1answer
129 views

Disagreeing with one's rebbe

We all have Rabbeim that we ask questions to. Is one allowed to disagree with his rebbe if he feels that his rebbe's viewpoint is incorrect?
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1answer
87 views

Subjectivity in Halacha

I'm learning the Sugya of pas haba'ah b'kisnin. This seems like an extraordinary area of Halacha, because the beracha on this type of food is entirely subjective, based on what others would be koveah ...
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3answers
605 views

Mah Nafshach - Is hair part of the human body or not?

Inspired by this answer, I'm curious. We hold that hair of a married woman is 'Ervah (ערוה). Yet it is not 'Ervah for an unmarried woman. According to the Gemara in Shabbath (Bab. 95a), braiding the ...
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1answer
66 views

Commandments on emotions [duplicate]

I can understand if the Torah commands one to wear tefilin or put on a mezuza. But to command a person not to hate anyone, not to covet anything of anyone, not to bear a grudge, love your fellow as ...