I know that was the official conclusion but I can't understand why -- the pedestrian walk out into the street (disrespecting the do-not-walk sign) and then paused in front of the car that hit her.

and on top of that, the pedestrian was crossing against a red (do not walk) light. Lots of human factors issues in this incident from all sides (driver, pedestrian, Cruise executives, regulators, media, policy makers, etc.)… The technology issues don't seem particularly profound.