It is hard to think of practical applications of the black hole. Because practical applications are so remote, many people assume we should not be interested. But this quest to understand the world is what defines us as human beings.

You can transmit a thousand times more information.

Big Internet companies on average are capable of generating revenue of $1 million per employee, and that compares to 10 to 20 percent of that which is normally generated by traditional offline businesses of comparable size.

I must analyze, from what I do now, what will be the impact two or three or five years in the future. What is the statement I want to make?

Facebook can be an accumulation of different intelligences.

Facebook is a platform inside a platform.

The company that creates one global social graph will be very important going forward. It will be Facebook, with maybe 2-3 local social networks able to sustain competition long term.