Ray Kurzweil

Futurist https://en.wikipedia.org/wiki/Predictions_made_by_Ray_Kurzweil

Inventor

2018 Google’s latest AI experiments let you talk to books and test word association skills
Google’s work in natural language understanding is getting better all the time

2013 Interview: How Ray Kurzweil Plans To Revolutionize Search At Google

The world is hierarchical. Only mammals have a neocortex, and the neocortex evolved to provide a better understanding of the structure of the world so you can do a better job of modifying it to your needs and solving problems within a hierarchical world. We think in a hierarchical manner. Our first invention was language, and language is hierarchical.

The theory behind deep learning, which I would call hierarchical learning, is that you have a model that reflects the hierarchy in the natural phenomenon