This slide was from an EDUCAUSE Live! Webcast on 16 Dec 2010 by H. David Lambert, president and CEO, Internet2:

The importance of being connected

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From DSC:
To me, it again reinforces the great need to be connected to networks of subject matter experts (SME’s) within a discipline. Without such personal learning networks, there is a chance that what  a professor is teaching may not be entirely accurate and up-to-date.