Known for the vigour in which he challenges the absurdities of the status quo in America through penetrating and often eviscerating rants about social and political issues like sex education, gun laws, and marriage equality–you could easily mistake John Oliver for a cynic. But the host of HBO’s Last Week Tonight and former political correspondent/comedian for The Daily Show, is an optimist through and through. During his live show in Melbourne, Oliver’s stories from his chil