jack of all trades

A "jack of all trades" refers to a person who has a moderate level of skill or knowledge across a wide range of different areas rather than being an expert in just one. In the context of general knowledge, it means someone who is versatile and can engage in various subjects, from science to arts, but may not have deep expertise in each. This adaptability allows such individuals to tackle diverse challenges and contribute in multiple contexts, although they might lack the specialized depth of a true expert in any single field.