His argument is that callback the semantic construct != nested brace hell the syntactic construct. Elm presents a new syntactic construct AND a new semantic co

His argument is that callback the semantic construct != nested brace hell the syntactic construct. Elm presents a new syntactic construct AND a new semantic construct. His example serves to demonstrate that the syntactic construct by itself is sufficient for many cases, which suggests that the original article might have been better served by being about Elm's syntax instead of bashing on the semantic construct.