The newspapers these days are full of sex scenes. Tales of exhibitionists, frottage specialists, voyeurs. I would normally be heartened to read about so much perversion, in the respectable press no less, but these are articles about sexual harassment in the workplace — so they are also the stories of unwilling participants who were intimidated into silence, threatened with professional retaliation, or assaulted. As the accounts of unwanted sexual advances pile up, I’ve been thinking about one of the rare novels that actually features terms like “unwanted sexual advances.” Helen DeWitt’s Lightning Rods (2011) is a satire of American business…