An illuminating and maddening examination of how gender bias has skewed innovation, technology, history and work.It all starts with a rolling suitcase.     The wheel was invented some 5,000 years ago, and the modern suitcase in the mid-nineteenth century, but it wasn’t until the 1970s that someone successfully married the two. What was the hold up? For writer and journalist Katrine Marçal, the answer is both shocking and simple: because "real men" carried their bags, no matte