How many times have this happened to you? 

You are in a negotiation and  you’ve used all of your negotiation styles and negotiating techniques  and you have just about exhausted all of the offers that you can make to  the other side. The other side may have also made a number of offers,  none of which really appealed to you. What’s a negotiator do to now?  

The good news is that you still have at least one trick left up your sleeve: MESOs.