Composability is a system design principle, specifically the ability to mix and match software components (such as Lego blocks). Each software component needs to be written only once, after which it can simply be reused. This is similar to an interest in compound interest in finance or Moore's Law in computing - some of the most powerful known economic forces - because it can unleash exponential power. In order to be composable - a concept closely related to interoperability - the metave...