Too many times we head into a customer engagement with them expecting one thing and we start to deliver something different. Whether it is the result of miscommunication, not reading emails and documents all the way through, or negotiations done with blinders on it doesn't matter...it's still a bad place to be.
It's hard to explain, but I see it all the time and even run into it myself with clients. They say they understood one thing, but when we go back and check emails and invoices they can see that it was clearly spelled out differently for them. Now I better understand why my wife sometimes gets mad at me...we often hear what we want to hear or interpret things the way we assume they will go...even if that is not what we are reading right in front of us...