While I don't necessarily disagree about SDI being a overall failure, we did get our current missle defence program and technology directly from the program. S

While I don't necessarily disagree about SDI being a overall failure, we did get our current missle defence program and technology directly from the program. SDI also funded a vast amount of scientific research, although I don't know of any specific success stories to result. Regardless, I wouldn't classify it as a textbook example of a moonshot failure.