Outline of the video

• recap of what was done so far
• intro and overview of the next steps in Layer 3: what is required now and how that is different from what was done so far
• before we focused on economic activities, Layer 2, which constructed the “boxes” of the value chain
• now in Layer 3 we will focus on adding values (numbers representing weight) to the flows and stocks of the arrows between the boxes
• next 4 modules