I remember a 'Survey of Programming Languages' class in college. Perhaps a archeology of code class and things already done. You are right, I wonder how much

I remember a 'Survey of Programming Languages' class in college. Perhaps a archeology of code class and things already done. You are right, I wonder how much of Computer Science knowledge is locked away never to be seen. Perhaps a tax credit for companies that donate their old source code to the Library of Congress.