Can octopuses feel pain or pleasure? Can we tell if a person unresponsive after severe injury might be suffering? When does a fetus begin having conscious experiences? These questions about the edge of sentience are subject to enormous uncertainty. This book builds a framework to help us reach ethic...

Can octopuses feel pain or pleasure? Can we tell if a person unresponsive after severe injury might be suffering? When does a fetus begin having conscious experiences? These questions about the edge of sentience are subject to enormous uncertainty. This book builds a framework to help us reach ethically sound decisions on how to manage the risks.