crowded yes, crazy, not really. it's a very behaved orderly crowded. and in my experience during most of the day it's fine, it just gets crowded during rush hour times.
I agree. The most remarkable thing I noted about being amongst so many people on the streets is how quiet it is. No honking horns and people speak softly. It's really quite amazing compared with other major world cities in Asia, Europe, the US, etc.