ודבר דבר (Dabair Davar): Talking About Calculations on Shabbos;
Does It Make a Difference How One Removes Something Growing from the Body (e.g., Cutting vs. Biting Nails, Cutting vs. Plucking Hair)?;
Understanding the Concept of טירחא יתירה (Excessive Tircha, Major Exertion) on Shabbos;