The document provides an overview and guidance for writing a problem-solution essay. It discusses the basic features that should be included: a well-defined problem, a clearly described solution, a convincing argument, an effective counterargument addressing potential objections, and an evaluation of alternative solutions. It also summarizes two sample problem-solution essays, identifying how they incorporate these basic features. The document concludes by providing a prompt and guidance for writing a problem-solution essay as Assignment #4.