As a pedestrian I can say people who are walking do need to be "defensive" walkers and try to anticipate. With a lot of distracted drivers you can't presume they've seen you, even when you are crossing where you should. I've had a lot of near misses with drivers wanting to turn right-on-red who are looking up the street at traffic and I've become invisible to them at the crosswalk. Everyone needs to take resposibility