At the United Nations General Assembly this weekend in New York, U.N. member states are set to adopt the new Sustainable Development Goals. The goals are meant to guide development priorities around the globe over the next 15 years. Critics and supporters alike are declaring them to be highly ambitious — maybe even too ambitious.

The SDGs, as they’ve come to be called in humanitarian lingo, replace the Millennium Development Goals, which were adopted in 2000 and expire this year.

The MDGs dealt primarily with poverty, education and health in the poorest countries. The SDGs hit all of those topics but also tackle global inequality, environmental issues and access to technology.