“Debater” had no foreknowledge of topics and assembled arguments in real time searching hundreds of millions of articles for evidence.
A fascinating exercise.
The system took 6 years to develop.
Interesting paragraph in the article: “The system has not been designed to judge the reliability of the information it draws on to make its arguments, said Noam Slonim, the researcher who led the project. But he said the system could still be used as a weapon against fake news, since if it provided full transparency about the sources it was drawing on, humans would have the chance to judge the strength of its case.”