we might have to stop the functioning of private cars if air pollution increases in the city. the time to make sure your content is complete and the technology works is before you roll it out to your larger learning audience. these kids who work for me are going to go out and do what they want to do, because they worked here  just like i was able to come here because i worked for other people who were successful. ​you don't actually need a full course ready before you launch! 