He's right! There are transistors which have light at different frequencies on the same hardware. This paper[1] talks about how they've achieved 1.125 Tb/s thro

He's right! There are transistors which have light at different frequencies on the same hardware. This paper[1] talks about how they've achieved 1.125 Tb/s throughput with various techniques. So he's right about optical computing, but just not in the way you anticipated :) Just extremely fixed functions with mind-blowing capacity. [1]: https://www.nature.com/articles/srep21278 https://www.nature.com/articles/srep21278