The syntax doesn't make too much difference. With a dynamic or duck type system, though, you can avoid a lot of writing out interfaces or making class hierarch

The syntax doesn't make too much difference. With a dynamic or duck type system, though, you can avoid a lot of writing out interfaces or making class hierarchies. You end up with something less structurally uniform, but with a much shorter time to get results. If you care about type mismatches, use a statically typed language. If you just want to get something working, use a dynamically typed one.