The achievement of Watson indicates we could easily be about to embark on a rapid evolution regarding intelligent software. Here is a video of Watson taking part in a practice for the Jeopardy TV quiz.
Any slowness regarding AI software seems to be vanishing.
To see a computer using and intelligently understanding human language is an amazing leap forward. Now let's consider how software is continually advancing: is it unrealistic to expect Watson to become more intelligent 5, 10, or 15 years from now?
Maybe Google's "instant" search algorithms will develop Artificial Intelligence. Voice recognition regarding browsers and smart phones is developing constantly.
In a few years I am sure all browsers will be able to understand human speech and our browsers will talk to us. Here is the current news regarding Google browser speech recognition.
There is no reason why Moore's law should top out. Computing power will continue to grow and software will grow rapidly making up for any previous lost ground.