Fun fact about that intersection vs many intersections. Most intersections around Boston will give pedestrians the walk light automatically on a cycle, and the "push to walk" buttons don't actually affect the cycle. At that intersection, you do need to press them to get the walk cycle. I once stood there for several cycles thinking how clever I was for knowing that the walk sign goes on automatically, staring at someone else across the intersection who was also standing there thinking how clever they were knowing that walk signs go on automatically before we both realized we were idiots and finally hit the walk button.