At the end of the change process something has changed. Something is not exactly the same as at the beginning of the change process. This 'new state' is the outcome or output.
 
The outcome may not be the final outcome. It may be the outcome at the moment the communication is being made. The erosion of a cliff by the sea may be a continuous process going on for thousands of years. The outcome is not necessarily what will happen at the end of the process but the outcome right now.
 
The use of a double 6, as in 66, suggests 'possibility' or'suppose'. Literally it means: 'an outcome produced as an outcome by our minds not by circumstances'.
 

• 56 What is the result? What is the conclusion?
• 65 no result; no outcome
• 776 produce an outcome; make a decision; reach a conclusion
• 86 purpose; the desired outcome
• 286 plan or strategy
• 386 person in charge; the boss
• 96 future tense; the future
• 46 danger; bad outcome
• 67 forecasting
• 26 control
• 326 a meeting ('people, change, outcome')

As with the other numbers the 6 is used in a broad sense as outcome, future, result, end, purpose, etc.