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Even assuming the 7 days are symbolic/conceptual as opposed to literal does not mean that their commemoration cannot be with a literal 7th day. Indeed, if one loses track of the days of the week (e.g. at sea) he keeps every seventh day anyway. (There are many mitzvot where something concrete represents something conceptual, e.g. teffilin, sukka, korbanot, ...


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found this the Zohar (3:10a) quotes an even earlier book by Rav Hamuna Saba of the 2nd temple era "The Entire earth and those around it, spin round in a circle like a ball, both that at the bottom of the ball and those at the top. All G-d's [human] creatures, wherever they live on the different parts of the ball, look different because the air is ...


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Surprisingly enough, proteins (such as those found in food, especially in meet) have a great affinity in binding to steel surface layer. On top of this, proteins also tend to affect the chemical composition of the stainless steel surface, by selectively releasing metal ions from the stainless steel alloy. https://en.wikipedia.org/wiki/Protein_adsorption ...


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As far as I know (from experience around the industry) this is a generally recognized phenomena. Consider Flavor Scalping, where the packaging absorbs the flavor of the contents and vis-versa. Now, I'm sure in the details the Halacha is way more strict in many cases beyond a scientific understanding of the situation, but the basic notion is certainly well ...


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The most straightforward reading -- I'd say this is based on the Talmud -- is that it's miraculous. And only works if the husband has been behaving himself too, and if this is a rare and shocking event. Hence it stopped working sometime during the Second Temple period. (In effect, normally if a husband warned his wife not to hang around with Billy Bob, and ...


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Actually, a number of meforshim explain that it starts with the the general and then gets specific. Thus the first verse (Bereishis) refers to the entire process (all seven days). The Art Scroll Chumash states "In the beginning of Hashem's Creating" This phrase is commonly rendered In the beginning Hashem created, which would indicate that the ...


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Bamidbar Rabba 9:34 has a story with Rabi Akiva who explained to a black king that his child was white not because his queen had been unfaithful, but because she had been focusing on white images while they were together. Rabi Akiva explained that this was the phenomenon behind Yaakov's treatment of Lavan's sheep in Bereishis 30. According to this ...


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There's a story in the Talmud - Shabbat 31a - about a guy who tried (unsuccessfully, as it turned out) to win a bet by provoking Hillel to anger. He posed three questions about phenotypic variations in certain human populations: מפני מה ראשיהן של בבליים סגלגלות א"ל בני שאלה גדולה שאלת מפני שאין להם חיות פקחות [He asked,] "What is the reason that the ...


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Shulchan Aruch introduces the laws of cross-breeding/cross-grafting species by saying that "two plants or animals may appear to be different, but are actually the same species but grew differently because of conditions or locations."



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