The most limiting factor, by far, is processed silicon. And that is a rising limit. Algorithm limit? Progress is accelerating noticeably, year-to-year. Demand

The most limiting factor, by far, is processed silicon. And that is a rising limit. Algorithm limit? Progress is accelerating noticeably, year-to-year. Demand? No bottleneck there. Tech demos have become accidental products, with dozens of users rising to hundreds of millions in months. Which, for those of us who grew up in the 17th century, is pretty damn fast!! Let me tell you! New applications? All kinds of brilliant (and pathetic!) uses springing up. Just on my Mac alone. Commercial deep learning (neural network) software hit the road in the early 90's. People wondering when the explosion will happen apparently missed the long burning fuse phase. It's happening.