Sara Olsen provides a brief history of impact measurement and management A client recently mentioned in their impact report that they adopt a "first principles" approach. The concept is potent: it involves understanding the objective, questioning whether existing solutions are suitable for the present and future, and using evidence rather than just intuition to guide decisions. Applying first principles to impact management can assist leaders newly tasked with deciphering their company's "sustainability and impact" to get straight to the point. Today, corporate sustainability and impact officers face a formidable job description: Decide how the company should react to new mandatory disclosures.…