The article aims to rethink how companies pick the right skills to get ahead in a competitive market. It suggests connecting a firm's investment in skills to its actions in selling products. Researchers introduce a way to look at skills based on how useful they are across different markets. They show that companies vary in how they invest in skills, with some skills being more versatile and useful in many industries while others are super specific. By looking at this idea, they can better understand why companies choose to diversify their products.