Africa's informal economy is one of the most innovative and inventive environments in the world. Yet it is an environment with little regulation in which workers are often exposed to hard conditions and live without a safety net.
We must ensure that while eliminating child labor in the export industry, we are also eliminating their labour from the informal sector, which is more invisible to public scrutiny - and thus leaves the children more open to abuse and exploitation.
I love a modern suit paired with a polo or cotton T-shirt... and then paired with leather sneakers, or cashmere joggers with a tailored blazer and a sleeveless puffer vest to get the ultimate informal and formal combination.
During a large disaster, like Hurricane Katrina, warnings get hopelessly jumbled. The truth is that, for warnings to work, it's not enough for them to be delivered. They must also overcome that human tendency to pause; they must trigger a series of effective actions, mobilizing the informal networks that we depend on in a crisis.
Judging by informal observation, most young Americans burn up their spare time buffing their emotional IQ and self-esteem with social media and non-stop texting. That's great for eye-thumb coordination, but what about the satisfaction of actually making something?
I think also of my colleagues in elementary particle theory in many lands, and feel that in some measure I am here as a representative of our small, informal, international fraternity.
I like to perform live like we're all just hanging out in my living room. I'm totally casual and informal on stage.
I've done an informal, anecdotal survey about marriage, and I've found no evidence that it brings happiness.
But there's always a Mass. It's not a formal Mass at all. We're sitting around her dining room table with wine and Eucharist and holding hands. It's very informal and small, but to me that's a wonderful way to have Mass.
So from a long time ago, every year 700,000 Mexicans have only three routes to take: migration, the informal economy and the path to antisocial behavior.