[tome]

> In open systems you don't really get to decide who consumes your data or how--your program can't communicate anything other than data to them--and so you often don't have a way of enforcing your types on eventual consumers. Haskell has strong opinions about how it thinks data should be represented and aggregated. But in large open systems, as the saying goes, "opinions are like aholes; everybody has one."

True, and edn is equally as parochial as any Haskell serialization format. I don't see how Hickey can claim primacy here.