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Teachers worried about students turning in essays written by a popular artificial intelligence chatbot now have a new tool of their own. Edward Tian, a 22-year-old senior at Princeton University, has built an app to detect whether text is written by ChatGPT, the viral chatbot that's sparked fears over its potential for unethical uses in academia. Tian, a computer science major who is minoring in journalism, spent part of his winter break creating GPTZero, which he said can "quickly and efficiently" decipher whether a human or ChatGPT authored an essay.

AI writers like ChatGPT can often produce work that is, at least on first glance, indistinguishable from human writing. With a simple prompt like "write an expository essay on symbolism in Heart of Darkness," ChatGPT can spit out an organized, coherent, five-paragraph essay in seconds. (See results below.) And no two essays will be identical. In some cases, help from an AI may be as acceptable as using a Google search as part of the research process. But in many cases, it will be unacceptable for classroom work. So how do teachers deal with the growing ease with which AIs can complete student homework? Turnitin, which is known for its technology used for plagiarism detection, has posted a technology preview that shows its software automatically detecting work written by an AI writer, even going so far as to show which parts of an essay were written by AI versus human and indicate where AI writing transitions into human writing.

Artificial intelligence can make adults nervous, but experts say exploring it as a family is the best way to understand its pros and cons. It's important to understand how a chatbot works, employing a "neural network": a mathematical system that learns skills by analyzing large amounts of data. The chatbot works by scraping the internet for digital text or images. It gathers information from a variety of places, including websites, social media platforms and databases, but it does not necessarily choose the most reliable sources. In other words, even though chatbots may appear authoritative, rigorous and trustworthy, they are not always reliable and can produce content that is offensive, racist, biased, outdated, incorrect or simply inappropriate.

This comprehensive talks about what AI is and where it came from, along with the basics of why it has gained so much success lately. It explores how we can go about trusting this new technology, both in terms of tailored online services like ChatGPT and in terms of bigger machinery such as smart homes, self-driving cars, and more.