Natural epidemics can be extremely large. Intentionally caused epidemics, bioterrorism, would be the largest of all.

It's easier to add things on to a PC than it's ever been before. It's one click, and boom, it comes down.

With Windows 8, Microsoft is trying to gain market share in what has been dominated by the iPad-type device. But a lot of those users are frustrated. They can't type. They can't create documents.

India is more of an aid recipient than a provider of aid.

I set a rule that people weren't allowed to send good news unless they sent around an equal amount of bad news. We had to get a balanced picture. In fact, I kind of favored just hearing about the accounts we were losing because ... bad news is generally more actionable than good news.

When you write a piece of software you assume a certain type of hardware. If you assume hardware that's too powerful then you can't sell many copies cause very few people have that machine. If you assume hardware that's too simple your product can't do as much.

China is certainly an important player in the global economy, and a widespread AIDS epidemic would threaten that growth.