This will be the basis of funding going forward. The images below are taken from this slide-pack, more sophisticated than anything I've seen from the likes of Accenture.
Click on any of the pictures to make larger - or better, review the entire slide-set.
Although this 'three wave' model is not too surprising, it's still an accurate view as to where research is heading.
If human beings are taken as exemplars of neural nets which can explain their own, contextual operation, it's worth noting that such explanations have a curious character.
No human can explain their own sub-conscious neural processes. If asked to explain how you know that a picture of a cat is indeed that of a cat, you are not going to elucidate details of early visual processing in your visual cortex.
Instead, you are going to traffic in high-level, symbolic descriptions of putative intermediate stages in scene interpretation. The talk will be of features such as fur, shape, the environment of said animal.
These intermediate-level symbolic descriptions are remote indeed from the actual neural processes which it is claimed implemented them .. and indeed will have only a contingent (although highly correlated if accurate) relationship with them.
Self-deception is never far away in the third wave!
If you have sixteen minutes, John Launchbury's presentation of DARPA's strategy is excellent.
Interestingly, John Launchbury is British.