Latest / Matmonim: Daf Yomi by Rabbi David Lapin
Chullin 135a & 137b Changing Appearance Can Change Essence 2 – ראשית הגז, צבעו פטור (ב)
The potential useage of a commodity is almost infinite. Not so a manufactured product. In ideas and learning as well, there are principles that function like commodities with very wide application, and there are well-worked ideas whose application is much narrower.
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