For impact investors, the discomfiting thrum for expanding reach and achieving scale reminds us of the immensity of our social and environmental challenges. Two decades of creativity and deep collaborations have brought the field of investing for good a long way; it also reveals how much remains incomplete. The evidence overwhelms us. The rate and size of global transformations necessary to meet the SDGs, standardize impact metrics, and assure veracity in reported impacts requires more of us including better public policies. Why? Public policy is scale; it can help attract more investments, more quickly, with more confidence of impact by:…