By allowing you to visualize and experiment with different designs, sketching allows for a more efficient and effective design process. With the ability to easily make changes and try out different options, you can save time and resources in the long run, as you can identify any potential issues or improvements early on. Sketching can also help you make more informed decisions by giving you a tangible representation of your ideas.  To follow along, visit urban.arcgis.com and sign in with a professional or trial account to access your own copy of the Boston, MA urban model.