It also has a lot of advantages. It's as powerful as it is dangerous. The real reason they don't do it is because they can't. It's inherently unsafe. In order

It also has a lot of advantages. It's as powerful as it is dangerous. The real reason they don't do it is because they can't. It's inherently unsafe. In order to always be sure something is never null you have to be aware of what all it's inputs are so you can reason about it. That's not possible with runtime metaprogramming techniques. I dunno I guess I just think it's an odd choice. Don't get me wrong, it's a neat experiment and I value it. I'm just slightly miffed that that particular experiment had to mixed in with what amounts to a statically typed language with the beauty and simplicity of Ruby but the friendliness and discoverability of static typing.