I would not call this "industry perspective". Java type system is good enough for "industrial use". Most problems described in article are not for backward com

I would not call this "industry perspective". Java type system is good enough for "industrial use". Most problems described in article are not for backward compatibility. But because java at runtime (JVM) is dynamically typed (Java compiler is statically typed). You can do much nastier tricks with reflection. Scala is not much better, I wrote some examples: http://www.mapdb.org/blog/scala_has_weakly_typed_syntax/ http://www.mapdb.org/blog/scala_has_weakly_typed_syntax/