- No assumptions. AlphaGo approached the game without any assumptions. This is called a model-free approach. This allows it to program itself from scratch, by building complex models human programmers can't understand/match.
- Big Data. It then learned the game by interacting with a database filled with 30 million games previously played by human beings. The ability to bootstrap a model from data removes almost all of the need for engineering and programming talent currently needed for big systems. That's huge.
- Big Sim (by the way, Big Sim will be as well known as Big Data in five years <-- heard it here first). Finally, it applied and honed that learning by playing itself on 50 computers night and day until it became good enough to play a human grandmaster.
- This technology is going to cut through the global economy like a hot knife through butter. It learns fast and largely on its own. It's widely applicable. It doesn't only master what it has seen, it can innovate. For example: some of the unheard of moves made by AlphaGo were considered "beautiful" by the Grandmaster it beat.
- Limited AGI (deep learning in particular) will have the ability to do nearly any job currently being done by human beings -- from lawyers to judges, nurses to doctors, driving to construction -- potentially at a grandmaster's level of capability. This makes it a buzzsaw.
- Very few people (and I mean very few) will be able to stay ahead of the limited AGI buzzsaw. It learns so quickly, the fate of people stranded in former factory towns gutted by "free trade" is likely to be the fate of the highest paid technorati. They simply don't have the capacity to learn fast enough or be creative enough to stay ahead of it.
PPS: This has huge implications for warfare. I'll write more about those soon. Laying a foundation for understanding this change first.