There isn't really a ceiling to great engineers, I'm not sure how you came to this conclusion. As an engineer, your knowledge base constantly expands, and build

There isn't really a ceiling to great engineers, I'm not sure how you came to this conclusion. As an engineer, your knowledge base constantly expands, and building a well engineered system can make a product far better for far cheaper. Knowing how an entire large or complicated product works can be very important, and can take an immense amount of time. In fact, most engineering jobs that I've worked existed entirely because shoddy and poorly engineered products needed whole new product categories invented to make up for shortcomings.