The people who resist change will be confronted by the growing number of people who see that better ways are available; thanks to technology.

There are a variety of techniques for breaking software down into pieces and making software development more efficient. Many of these techniques have been sort of... and everybody got excited about but very little benefit was actually derived once the thing was put into practice.

I have this very positive view of the world getting better and better. The list of things that could be huge setbacks is not very long: A nuclear war, climate change and epidemics.

The world today has 6.8 billion people...that's headed up to about 9 billion. If we do a really great job on vaccines, health care, reproductive health services, we could lower that by perhaps 10 to 15 percent.

Software substitution, whether it's for drivers or waiters or nurses ... it's progressing. ... Technology over time will reduce demand for jobs, particularly at the lower end of skill set. ... 20 years from now, labor demand for lots of skill sets will be substantially lower. I don’t think people have that in their mental model.

We are not even close to finishing the basic dream of what the PC can be.

We’re no longer in the days where every program is super well crafted. But at the heart of the programs that make it to the top, you’ll find that the key internal code was done by a few people who really knew what they were doing.