In general, it's amazing to see the difference that slight "UI" improvements like this can make. For instance, the Cambridge crosswalk signals count down the t

In general, it's amazing to see the difference that slight "UI" improvements like this can make. For instance, the Cambridge crosswalk signals count down the time left to finish crossing. This may seem like a trivial nicety, but just across the river I feel like I'm rolling the dice every time I step into an intersection where I didn't specifically see the walk symbol come on. Will the light turn green while I'm in front of traffic? Or will I be doing a goofy half-run only to find out I had another minute or two to cross leisurely? First world problems, I know.