Most open offices I have worked in have been quite noisy. Most people end up wearing headphones of some type. I'm not sure how that contributes to information flow and collaboration.
I have worked in some open offices that are designed quite well with noise baffling and spaces broken up such that there wasn't an additive effect of every noise in the larger office being heard.
I have worked in some open offices that are designed quite well with noise baffling and spaces broken up such that there wasn't an additive effect of every noise in the larger office being heard.
I prefer some mix.