Reconstructing OPL: Joseph Weizenbaum's Online Programming Language

Joseph Weizenbaum joined MIT in 1963 and is most famous for creating ELIZA , the world's first chatbot. One of his other projects was OPL, the Online Programming Language, which used his SLIP list processing library to implement an interpreted, interactive language that could take advantage of the new facilities provided by time-sharing operating systems like CTSS . First conceived in 1963, it was…