"Many things are invisible to people because of the unexpectedness of where they really are. Who would expect silk to come from worms?
People imagine that because they have grasped this point, they can exercise expectation. But, expectation may conceal the visibility of something by obsessing the observing person.
Unexpectedness is a form of expectation: 'I did not expect that' means 'I was expecting something else.'
Expectation alone is useless. The expector must be informed."
Hockney