Định Nghĩa và Ý Nghĩa của "back to the drawing board"

What is the origin of the idiom "back to the drawing board" and when to use it?

The origin of the idiom "back to the drawing board" goes back to the 1940s when engineers and designers used drawing boards to create technical drawings for new products. If a design didn't work or was rejected, the engineers would have to go back to the drawing board to come up with a new design. Today, the idiom is commonly used in a variety of contexts, including business, science, and creative endeavors. It implies that the first attempt was unsuccessful, and a new approach or strategy is needed to achieve success.