You're welcome.* A lot of human knowledge, to me, is going down
   mazes, looking for various bits of cheese.* Sometimes it's easy
   to forget we're in a maze.* But occasionally you get the view
   from above and you look back and go, "oh look, perhaps we can
   take a slightly different turn from the one we did 80 years ago;
   and let's see where that tunnel goes". Might be dead ends.*
   Might be no cheese.* It might lead to a path out of the maze, or
   give us the ability to walk right through the walls themselves.*
   But it makes for an interesting journey just the same.