Discussion Topic Top of Form The three pillars (economic, social, and environmental) of sustainability are important because they offer a framework that can be used to evaluate and understand the sustainable development of an organization, business, product, or service. As project lead , you are planning key sustainable strategies for your design early on. You are an ardent proponent of sustainability as it relates to...(economic, social, or environmental). Read the GSA Sustainable Facility Tools in the Learning Activities: Define and list an Economic, a Social and an Environmental sustainability suggestion(s) in your discussion post and explain how each would improve sustainability in your future facility plan. OR In your selected facility plan, explain WHY flexibility is important and specifically HOW you plan to achieve it? and a scholarly reference (the US GSA resource or Hayward is acceptable).