We care about your data, and we'd like to use cookies to give you a smooth browsing experience. Please agree and read more about our privacy policy.Seventy years after the invention of a data structure called a hash table, theoreticians have found the most efficient possible configuration for it.Allison Li for Quanta MagazineIntroductionAbout 70 years ago, an engineer at IBM named Hans Peter Luhn quietly changed the course of computer science. Luhn already held several patents, including one for...