Thief of time

Scanning the news stories about student demands at college, and the latest limit in the search for dark matter, reminded me of a fun book. "Contrary to the headmistress's instructions, Miss Susan did not let the children do what they liked. She let them do what she liked. It turned out to be a lot more interesting for everyone."

For something to exist, it has to be observed.
For something to exist, it has to have a position in time and space.
And this explains why nine-tenths of the mass of the universe is unaccounted for.
Nine-tenths of the universe is the knowledge of the position and direction of everything in the other tenth. Every atom has its biography, every star its file, every chemical exchange its equivalent of the inspector with a clipboard. It is unaccounted for because it is doing the accounting for the rest of it, and you cannot see the back of your own head.
Nine-tenths of the universe, in fact, is paperwork