Happiness is contagious, too

 
pic c/o

Hat tip Libby

So we already know that a lot of stuff we've traditionally tried to see through the lens of individual agents who shape their own behaviour independent of each other (either through volition or some kind of pathology) is socially-spread

Obesity
Suicide
Binge Drinking

Now this study shows how happiness is something that spreads from person to person across social networks, too

UPDATE: So ask yourself this – if all these (important) things spread primarily through social means, why would the thing you & your client is concerned with is going to spread primarily through any other means…?