> It's now rude to just call someone on the phone without asking permission first. Is it? I think that norm varies a lot with different sections of culture. If

> It's now rude to just call someone on the phone without asking permission first. Is it? I think that norm varies a lot with different sections of culture. If it was universally rude, then it'd be damn silly that phones are all set up to be able to receive calls unsolicited, by default. "Do not disturb" could be the default.