# Thinking in Systems A : [[book]] Author : [[Donella Meadows]] > reading Meadows is a good start. But Meadows represents only one lens, the systems dynamics lens of “resource stocks and their flows.” Meadows only briefly touches on regulation and feedback; she does not fully address systems as “information flows;” and she ignores second-order systems and related topics, such as learning and conversation. > > – [[A Systems Literacy Manifesto]]