…I had promised myself as I did last year, that I would
not take the participants out onto the streets of Boston, since I live downtown. ..
As mentioned, Dick had come with a low-riding recumbent trike, from Fairborn, Ohio, small, probably rural town I imagined, and now at the end of the Path we were facing the busy mean streets of downtown Boston at rush hour. I myself had never ridden most of that on-street route to the Navy Yard, but I knew we could take sidewalks. Dick, as he was during the entire weekend, said “Fine, you lead the way.”
So we made our way, mostly on crowded sidewalks with some hazardous street crossings. Eventually I had to give up and go onto the streets. Dick had no problems with street riding, and actually seemed to prefer it. Later on he said it’s really no problem, and has cycled streets around the world such as Munich and London, so I realized, “What’s Boston?”
[The next day] Finally he revealed that he is a certified Cycling Instructor by the League of American Cyclists and taught safe, including urban, cycling to adults and children. As a decades-long, year-round urban cyclist,
I proudly told him I learned by experience, and he replied, “It shows. You made some mistakes out there.” 
…