the West people deciding not to share anything with the East people anymore, preferring to deal with neighbours in the PNW instead.
This being said, I feel that the urban fabric of the Eastern cities is very, very different from that of the Western ones. Of course we can learn from one another, and we should. I like subscribing to the World Carfree Network's magazine and mailing list because of all the amazing stuff I learn there.
On the other hand I don't think there's anything such as "right information." What worked in one place doesn't necessarily work in another.
For example the mere fact that cities like Montreal and Boston have existed for 400 years (compared to about 100 for Vancouver) make a big difference in infrastructure matters. In the same vein, I'm all for 'Copenhagenizing,' but the truth is that the variables are TOTALLY different here and solutions can't be imported without some serious thought if we want them to work. The density of cities is also very, very different.