...&.&&&..                                          ......&.&.
.....&.&&.                                          &........&
&......&&.                                          .&........
.&.....&&&                                          ..&.......
..&....&.&                                          ...&......
...&.....&            ==================            &...&.....
....&....&           = maintenance time =           &&...&....
.....&....            ==================            .&&...&...
......&...                                          .&&&...&..
.......&.. maintenance time: pockets of  empty time .&.&&...&.
........&.     between planck seconds, wherein      ...&&&...&
&........&   mysterious entities do maintenance on  ...&.&&...
.&........              the universe.               .....&&&..
..&.......                                          .....&.&&.
...&......         ... dark maintenance ...         &......&&&
&...&.....                                          &&.....&.&
&&...&....                                          &&&......&
.&&...&...                                          &.&&.....&
.&&&...&..                                          ..&&&.....
.&.&&...&.                                          ..&.&&....