Facebookisacompanythathasgrownfromnothingtobeworthhalfatrilliondollarsinjust15years.Todaynearlyathirdofallhumansareusingit,andyetwerarelygettoseethepeopleactuallyinchargeofthebiggestsocialnetworkintheworld. 　　Thecompanyhassufferedaseriesofdeepeningscandalsandintensemediascrutiny.In2018,theirmission-toconnectever...