Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An important tool for understanding our human limitations

Peter Seidel should be commended for his thorough and well-documented study of humanity's INVISIBLE WALLS. He brings to the forefront the ways the culture, its institutions, and our own thoughts and behaviors generate the problems that surround us. To know what the barriers are is to empower us to act to overcome them. It is only by studying and acknowledging "what is," that we will be able to imagine and work effectively towards "what could be." Seidel's solutions are the first steps in assisting readers to tackle their own proposals for remedies to the world's pressing environmental concerns.