>>Rugged+9P1
Deep learning was an advance. I think the fundamental achievement is a way to
use all that parallel processing power and data. Inconceivable amounts of data can give seemingly magical results. Yes, overfitting and generalizing are still problems.
I basically agree with you about the 20 year hype-cycle, and but when compute power reaches parity with human brain hardware (Kurzweil predicts by about 2029), one barrier is removed.