> Two arms length requires me to raise my voice to talk to you, which I consider ruder than being close. I've been paying attention to this and have come to th

> Two arms length requires me to raise my voice to talk to you, which I consider ruder than being close. I've been paying attention to this and have come to the conclusion that this is one of the major factors why Americans are perceived as "loud". As you indicate, this can lead to another type of invasion of personal space (for those who aren't part of that particular conversation).