The arena is huge, and the bigger it is, the more plausible it is. The story is long, and the longer it gets, the more ambiguous it becomes. The scenery is far away, and as far as the eye can see is only a few feet. Standing on the railing and looking far away, you can't see the cause and effect; looking into the dark place, you can't find out what's in your heart. So moving forward, not knowing the way forward, only looking forward to the coming future, is the best arrangement.