There are good reasons to believe candironc actually went to paris, quite a few representatives of indigenous nations did go to europe on delegations at that time. He was the official spokeperson of his nation. Even if he didn't, he certainly was very experienced at dealing with europeans in european settings,. In colonial european towns and so on. And you can compare the words of adario in the dialogues to many other accounts. Especially important are the 70 something volumes of the jesuit relations, which were very widely read in europe at the time. They presented surprising ideas about other ways to live.