I find that quote true regarding the linked example yaml. Applying it globally might as well be BS. Where I've seen it in practice is in software that allows e

I find that quote true regarding the linked example yaml. Applying it globally might as well be BS. Where I've seen it in practice is in software that allows end-user configuration. At the intersection of classic directive oriented configuration and the dynamic configuration file, but not quite an embedded language. Another example is when you allow users to input rules, or have rule builder systems. You're going to build something similar to a lispy evaluator fir those rules.