Desirability- Viability- Feasibility

As we move into the problem-solving phase of Challenge 20/20, we took some time to review the topics we have studied to date and how we can use "design thinking" to create scalable, real world solutions.

We watched Tim Brown's TED Talk on the elements and history of design thinking 

With this in mind, watch Boyan Slat's TED Talk about his approach to the problem of plastic pollution in the Pacific.  

Given the elements of design thinking, please comment below about the desirability, viability, and feasibility of this project.  Where is is successful?  Where does it need improvement, and how can we learn from his example?