I think a lot of what people were ruffled about was his remarks about reinventing the wheel. There are preferred ways of writing code in all languages, some mor

I think a lot of what people were ruffled about was his remarks about reinventing the wheel. There are preferred ways of writing code in all languages, some more extreme than others. However, while Scala is backwards compatible with Java, it's not always as nice to use a library which is firmly rooted in Java.