And the ones who have only been in New England -- Charlie Weis, Romeo Crennel and now McDaniels -- have missed the element of what went into developing the program in Cleveland, therefore they missed a huge step in the evolution. The failure rate among NFL coaches, regardless of their background is high. However when coaches leave an established program like the one in New England, not every owner is willing to embrace the time it takes to lay the foundation. Also, not all the new coaches carry Belichick's uncanny ability to evaluate talent, and also what his team needs to be successful.