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 wasn't until the 1970s that someone successfully married the two. What was the hold up? For writer and journalist Katrine Marcal, the answer is both shocking and simple: because "real men" carried their bags, no matter how heavy. Mother of Invention is a fascinating and eye-opening examination of business, technology, and innovation through a feminist lens. Because it wasn't just the suitcase. Drawing on examples from electric cars to bra seamstresses to tech billionaires, Marcal shows how gender bias stifles the economy and holds us back, delaying innovations, sometimes by hundreds of years, and distorting our understanding of our history. While we talk about the Iron Age and the Bronze Age, we might as well talk about the "Ceramic Age" or the "Flax Age," since these technologies were just as important. But inventions associated with women are not considered to be technology in the same way.