As negotiators we all know that it is all too easy for a negotiation to  come to a grinding halt. 

You and the other side have exchanged a series  of offers and counteroffers, and you’ve met somewhere close to the  middle—but not close enough. At this point, each side is firmly rooted  in its position and there may seem to be no way forward no matter what negotiation styles or negotiating techniques you choose to use. 

Negotiators understand that this is when it helps to know how to use MESOs in a negotiation.