I spoke of this in a post on creativity 18 months ago.
Here is a video by Cleese on creativity.
At 9 minutes he says: “To know how good you are at something requires the same skills as it does to be good at that thing.
Which means if you are absolutely hopeless at something you lack exactly the skills that you need to know that you are absolutely hopeless at it. This is a profound discovery. Most people who have absolutely no idea of what they are doing have absolutely no idea they have no idea what they are doing. It explains a great deal of life….It explains why so many people in charge of so many organizations have no idea what they are doing.”