As of this year, 52 percent of all Egyptians are under the age of 25, and one in five is between the ages of 15-24--the ages of many of those out in the streets demonstrating against the government. When Mubarak took office, there were 9 million youth aged 15-24, and now there are 17 million, according to data from the UN Population Division. That's a lot of people to be dissatisfied with the difficulty of finding jobs, paying the bills, and saving money to marry and raise a family. To be sure, the mere presence of this large youth population would not, on its own, spark a revolution. But it was dry tinder waiting for the spark, which seemed to have been lit in Tunisia.