California drivers squawked, they talked, and one or two -- could it have been you? -- even balked at having cellphones ripped from their hands when the state law forbidding the use of handheld phones on the road went into effect in 2008. But according to a study announced Monday by the state Office of Traffic Safety, since that time, the number of traffic deaths in California declined by 22 percent. With fewer drivers yakking into handheld phones, the death-by-cellphone rate dropped an even more stunning 47 percent.

California drivers finally put down those cellphones and are living to tell the tale - San Jose Mercury News

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….