ELI5: Explain Like I'm 5

Doctor of Philosophy

A Doctor of Philosophy, commonly called PhD, is an academic degree earned by people who have done a lot of research, writing and studying in a specific subject. To understand what a PhD is, let's suppose that you really like seeing stars at night and want to learn everything possible about them. To do this, you would go to school and study astronomy, which is a field in science that teaches about stars, planets, galaxies, and other things in space. You would learn about the theories, observations, and experiments that scientists have made to understand what kind of stars there are, how they work, and how they formed.

Once you finish all your classes, you might feel like you know a lot about astronomy, but there is still a lot more to learn. And that's where a PhD comes in. With a PhD, you can do your own research, write your own papers and become an expert in your field. To earn a PhD, you need to do something new or unique in your field. This is called a dissertation, which is like writing a very long essay about your research. Your dissertation will be reviewed by other experts in your field, and they will give you feedback and ask you questions to make sure that your research is good and makes sense.

It takes a lot of hard work and time to earn a PhD. Many people spend 5-8 years working on their research and writing their dissertations. But once they finish, they become experts in their field and can teach others, do more research, or work in industry, government or academia. So, a PhD is a degree that shows that someone knows a lot about a certain subject, and they also have critical thinking, analysis, and problem-solving skills that they can apply to different areas of their lives.