This document discusses the validity of evidence through technology. It notes that technology facilitates communication through smartphones, computers, online chats, and radio. Online chats allow people to communicate in real time and exchange personal details. Writers use evidence and argumentative texts to persuade readers by presenting the pros and cons of an issue. Evidence appears in essays and theses through paraphrase and quotation to persuade readers and support arguments. The function of evidence is to strengthen discussions by providing answers from texts, convince and persuade readers to support arguments, and influence public opinion.