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by gliese1337 2169 days ago
Important distinction: this is an epistemic "can", not a deontic "can".

In other words, they are saying that it is possible to keep your windows open if you want to and still not let noise in--not that you are permitted to cancel the noise, but must keep your windows open anyway.

I had initially thought this would be something about indoor CO2 buildup or something, but no.