[anatoly]

Because when Britain switched from coal gas to natural gas (low in carbon monoxide), the national suicide rate dropped by 40%.

[philwelch]

Suicide is often an impulsive act a person might commit once in their life. Rudeness is a persistent pattern of behavior that exhibits itself many times a day.

[zackattack]

I agree. Rudeness is a subtle act of body language that often goes undetected, and is probably only made more explicitly obvious by the presence of technology.

[VMG]

correlation does not equal causation