Not that many years ago, when walking on a sidewalk the sight of an adult cyclist on the sidewalk would annoy me. I mean, they just weren’t supposed to be there! Jerks! But these days when I see someone cycling on the sidewalk, as I did today, I see a person for whom the transportation infrastructure around them has failed them, and made them feel unsafe. And I’m glad to see that they’ve taken to the sidewalk to ride safely.