STOP SIGNS AND SOCIAL SIGNALS Sharp, humane, and richly acted, this new comedy lands with both wit and weight In The Balusters, playwright David Lindsay-Abaire once again proves himself a master of tonal tightrope walking—balancing biting social critique with deep wells of empathy, all wrapped in the polished veneer of a parlor room comedy. Set… The post Broadway Review: THE BALUSTERS (Manhattan Theatre Club at t…