Slack as Company of the Year

Can Slack replace Email?   Just recently was introduced to the growing social network, for a specific, but broadly defined topic.  Will it work to drive focus?   Unlike other social spaces, will it get things done  (Twitter?) , without a lot of deadening overhead (EMail?).  I like it so far.  But how much different is it?  Its new, so it can be focused, but for how long?  I was intrigued by Slack's statement of  " ... "teachable principles" he wants his people to internalize. They include "Don't make me think," "More clicks is OK," and "Data won't settle any interesting question."  ... ".     Will report back with a full impression after a few months.   True ... Data alone won't answer any interesting questions.   More in Inc.com which said Slack was their company of the year.