There are already tons of systems (for example Google Translate) that combine rule-based reasoning with probabilistic reasoning. Looks to be working to me.
It doesn't look like they are still using any rule-based reasoning?
The blog post says:
> With this update, Google Translate is improving more in a single leap than we’ve seen in the last ten years combined. [...]
Which seems pretty strong evidence to me that moving away from rule-based reasoning or even a hybrid approach that includes rule-based reasoning, was a clear win?
