Is there such a thing. Should one use it.....................?????

#1 While driving?
#2 If you have a passenger in the car
#3 In an elevator
#4 In a Restaurant
#5 On a Date
#6 In close proximity to others you don't know
#7 In a hospital
#8 At a sporting event
#9 On a job intreview
#10 On vacation in connection with work
#11 In a movie theater
#12 At a broadway play
#13 At a concert
#14 In a classroom

I"m you all get the point. What do you believe??

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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…….