"Back To The Drawing Board." The Challenger Tragedy

  https://www.spaceline.org/united-states-manned-space-flight/challenger-legacy-index/the-challenger-tragedy/ You've heard the saying, "Back to the drawing board." Ever think of where it came from or why it has become an idiom? Do some research and find out the origin of the idiom "Back to the drawing board" and how it relates to engineering. In your original post, answer the following: Find an example of "back to the drawing board" due to design failure or the need to improve a design. Summarize the issues you found. Discuss the pros and cons of having to go "back to the drawing board."