The paper explores the concept of social innovation, distinguishing it from business innovation. It argues that while business innovation focuses on profit and efficiency, social innovation addresses broader societal needs, such as improving quality of life, public goods, and social welfare. The authors propose a working definition of social innovation as an innovation that has the potential to improve either the quality or quantity of life. They emphasize that social innovation is not merely a buzzword but a critical area of innovation with significant implications for society. The paper highlights that social innovation often requires government support, as the market may fail to provide it due to its public good characteristics. It also notes that not all social innovations are desirable, as some may have negative consequences, such as the historical impact of innovations like cotton and cigarettes. The authors stress the importance of clear definitions to facilitate interdisciplinary communication and policy-making. The paper discusses the distinction between micro and macro quality of life, with macro quality of life focusing on the well-being of groups rather than individuals. It argues that social innovation should be evaluated based on its impact on macro quality of life, not just individual well-being. The authors also examine the role of government in supporting social innovation, particularly in cases where the market fails to provide adequate incentives. They suggest that government intervention is necessary to ensure that socially beneficial innovations are developed and implemented. The paper concludes that social innovation is a vital area of study and practice, with significant implications for improving societal well-being. It calls for a clear and comprehensive definition of social innovation to guide research and policy-making. The authors emphasize the importance of interdisciplinary communication and the need for terminological consistency to advance understanding of social innovation.The paper explores the concept of social innovation, distinguishing it from business innovation. It argues that while business innovation focuses on profit and efficiency, social innovation addresses broader societal needs, such as improving quality of life, public goods, and social welfare. The authors propose a working definition of social innovation as an innovation that has the potential to improve either the quality or quantity of life. They emphasize that social innovation is not merely a buzzword but a critical area of innovation with significant implications for society. The paper highlights that social innovation often requires government support, as the market may fail to provide it due to its public good characteristics. It also notes that not all social innovations are desirable, as some may have negative consequences, such as the historical impact of innovations like cotton and cigarettes. The authors stress the importance of clear definitions to facilitate interdisciplinary communication and policy-making. The paper discusses the distinction between micro and macro quality of life, with macro quality of life focusing on the well-being of groups rather than individuals. It argues that social innovation should be evaluated based on its impact on macro quality of life, not just individual well-being. The authors also examine the role of government in supporting social innovation, particularly in cases where the market fails to provide adequate incentives. They suggest that government intervention is necessary to ensure that socially beneficial innovations are developed and implemented. The paper concludes that social innovation is a vital area of study and practice, with significant implications for improving societal well-being. It calls for a clear and comprehensive definition of social innovation to guide research and policy-making. The authors emphasize the importance of interdisciplinary communication and the need for terminological consistency to advance understanding of social innovation.