Difference between error and failure

In an uncertain situation and without a  defined process, you try to set up new processes in order to achieve the desired results. The processes can fail, but you can’t consider it a failure or an error. You can only use the term ‘error’ when there are clearly defined processes and controllable situations.

Milton Erickson, when asked about his failures with his clients, answered:
“There is no failure, only feedback.”