Who was the greatest engineer?

Determining the greatest engineer is subjective and can vary based on criteria such as innovation, impact, or field. Notable figures include Nikola Tesla for his contributions to electromagnetism and electrical engineering, and Leonardo da vinci for his visionary designs that laid the groundwork for various engineering disciplines. Each engineer's influence has shaped modern technology and infrastructure in profound ways, making it difficult to crown a single "greatest" engineer. Ultimately, the title may depend on personal perspective and specific achievements valued by different individuals.