Preventing a Timer, Light, or Appliance from Turning On;
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...
ודבר דבר (Dabair Davar): Mentioning Something That Somebody Will Do After Shabbos When It's Not Allowed to Be Done on Shabbos Itself;