Now ordinary people have voice, not just those of us lucky enough to go to HBS, but anyone with access to Facebook, to Twitter, to a mobile phone.
This is disrupting traditional power structures and leveling traditional hierarchy.
Voice and power are shifting from institutions to individuals, from the historically powerful to the historically powerless.
And all of this is happening so much faster than I could have ever imagined when I was sitting where you are today and Mark Zuckerberg was 11 years old.
As the world becomes more connected and less hierarchical, traditional career paths are shifting as well.
In 2001, after working in the government, I moved out to Silicon Valley to try to find a job.
My timing wasn't really that good. The bubble had crashed. Small companies were closing. Big companies were laying people off.
One women CEO looked at me and said, "we would never even think about hiring someone like you."
After a while I had a few offers and I had to make a decision, so what did I do?
I am MBA trained, so I made a spreadsheet.
I listed my jobs in the columns and the things for my criteria in the rows, and compared the companies, the missions, and the roles.
One of the jobs on that sheet was to become Google's first Business Unit general manager, which sounds good now, but at the time no one thought consumer internet companies could ever make money.
I was not sure there was actually a job there at all; Google had no business units, so what was there to generally manage?
And the job was several levels lower than jobs I was being offered at other companies.
So I sat down with Eric Schmidt, who had just become the CEO, and I showed him the spreadsheet and I said, this job meets none of my criteria.
He put his hand on my spreadsheet and he looked at me and said, "Don't be an idiot." Excellent career advice.
And then he said, "Get on a rocket ship. When companies are growing quickly and having a lot of impact, careers take care of themselves.
And when companies aren't growing quickly or their missions don't matter as much, that's when stagnation and politics come in.
If you're offered a seat on a rocket ship, don't ask what seat. Just get on."
About six and one-half years later, when I was leaving Google, I took that advice to heart.
I was offered CEO jobs at a bunch of companies, but I went to Facebook as COO.
At the time people said, why are you going to work for a 23-year-old?
The traditional metaphor for careers is a ladder, but I no longer think that metaphor holds. It just doesn't make sense in a less hierarchical world.