Experts are individuals who have a deep understanding and extensive knowledge in a specific field. They often spend years studying and practicing their craft, which allows them to provide valuable insights and solutions. For example, a doctor is an expert in medicine, while a scientist specializes in research and experiments. Their expertise helps others make informed decisions and solve complex problems. In many areas, such as technology or finance, experts are sought after for their advice and guidance. They may write articles, give talks, or consult with businesses to share their knowledge. By relying on experts, people can benefit from their experience and improve their own understanding of various subjects.