Are the laggards really holding us back

A great question came up this past week about the laggards. These are the people on teams who don't contribute what others think they should and could. 

What do we do with them, or to them, is a different question than how can we support them and how can we better support those we consider higher performers and achievers. Attention to those labeled as laggards does not need to hold back our support to everyone else.