Welcome to the experimental section of this course. This section is entirely optional, but it's meant for me to discover with you what the power of MOOCs really is and what the future might be in this area. For these reasons, I'll try to delegate to you as much of the power I have as an instructor on the Coursera platform. I'll try to let you decide how to structure the forums, or even how the certificate, what the certificate should look like, and what it should reflect from your own personal journey through the course. So, if you feel challenged by those ideas, and especially if you have taken other classes where you saw nice ideas that you want to contribute, or if you have good ideas of your own, please join us and feel free to contribute.