La madre del ingenioAn illuminating and maddening examination of how gender bias has skewed innovation, technology, and history It all starts with a rolling suitcase. Though the wheel was invented some five thousand years ago, and the suitcase in the nineteenth century, it wasnt until the 1970s that someone successfully married the two. What was the hold up? For writer and journalist Katrine Maral, the answer is both shocking and simple: because real men carried their