Understanding the Concept of פסיק רישיה (P'sik Reisha): When an Allowed Action Causes a Forbidden Result with Two דרבנן. When Is One Allowed to...
Understanding the Severity of a מלאכה שאין צריכה לגופה;
The Concept of Trapping a Slow-moving Creature (e.g., Turtle, Caterpillar);