Agreed, it's trivial to embed. This is the sense to which type theory doesn't really have a ton to "say" about dynamic types. See my other response for a bit mo

Agreed, it's trivial to embed. This is the sense to which type theory doesn't really have a ton to "say" about dynamic types. See my other response for a bit more of a fleshed out idea here. Short of it is that I'm reading "dynamic typing" as the engineering discipline involved in building systems that introspect that sum in meaningful ways.