If you’ve ever carried your groceries home in a paper bag, you can thank Margaret E. Knight. It is a name that you have almost certainly never heard of, associated with an invention that seems too obvious to notice. But the brown paper bag is one of many useful modern conveniences that, trivial in hindsight, was by no means self-evident before its conception. The sweat and sacrifice its creator endured to bring this apparently simple object into our lives deserves our admiration. In a time where it was assumed that women were not smart enough to invent things, Margaret Knight showed a spirited resolve to realize her ingenuity and not allow others to take credit for her original work….