Because dynamic languages are almost always type inferred, you don't need to work as hard to express basic ideas.
由于动态语言几乎都是类型推断式的，所以您不需要花多大力气来表达基本思想。
2
Even with a deep understanding of dynamic compilation and JVM optimization, it's still pretty hard.
即使深入理解动态编译和JVM优化，也仍然是非常困难的。
3
As a new Ruby convert, I strongly believe that dynamic languages are more productive, though I don't have any more hard evidence than a typical static-language proponent.