No news on Papert’s condition, but I ran across this article that says he was interested, as I was, in the emergent behavior that organizes Viet Nam’s motorbike traffic, instead of rules and traffic enforcement. However, as his accident shows, and as my experience showed, it doesn’t always work. Especially for those who can’t react quickly.
In Saigon, I saw how children cross the street: one stood across the street and shouted until she got the attention of a man (probably her father) who came across and got her. And the blind: I saw a blind man shaking a stick and blowing a whistle, which didn’t affect the traffic, but a young man (a stranger) crossed to where the man was and then crossed back with him.