Yeah, I tend to be more in the difference in degree camp, with the caveat that it's pretty clear we're at least a few discoveries of structural mechanics away from mimicking human-style learning. We need to make advances in semi-supervised learning, as well as increasing sample efficiency, and reducing catastrophic forgetting. But my intuition says that the solutions will be pretty simple, and seem obvious in hindsight.

But I'm also guessing we'll come up with an endless number of complex tweaks to get the current stuff closer before someone figures out the simple mechanics and sweeps most of that away.