We use a map and compass to guide us, particularly when the terrain is confusing.  No matter what philosophical or political flavor you subscribe to, our current willingness to abandon maps in favor of streams of data, no matter how sophisticated the external analysis tools are, leaves us open to manipulation.  In our complacency, we rely on cloud or mere cultural cognition, or both.  Cultural cognition is limited to roughly two teams and a few tools in real-time. 

https://web.archive.org/web/20070418142809/http://groups.inf.ed.ac.uk/ppig/readinglist/tomasello_et_al2004.pdf