Now the tradition of open-air discussion continues over coffee or a glass of wine on some cafe terrace on the boulevard St-Michel or in the streets around the faculty buildings.
Traditional discussions are not allowed outdoors at all.  
mnli hypothesis: Traditional discussions are not allowed outdoors at all.   premise: Now the tradition of open-air discussion continues over coffee or a glass of wine on some cafe terrace on the boulevard St-Michel or in the streets around the faculty buildings.