The phrase "Jack of All Trades" refers to a person who has a wide range of skills and abilities across various fields. This term suggests versatility and adaptability, indicating that the individual can perform many different tasks competently, though they may not be an expert in any one area. Historically, the full expression is "Jack of all trades, master of none," which implies that while a person may be skilled in many areas, they lack deep expertise in a specific field. This concept is often contrasted with specialists, who focus on a narrow area of knowledge or skill, such as doctors or engineers.