Isn't the universe still growing? Which means that at some point in the very far off future, the ratio of of the diameter of the universe to the diameter of a proton will be 43 digits? Passing thought -- since 42 _is_ the the answer to the Great Question of Life, etc., perhaps only a universe with this ratio of certain length can support life, e.g. when the universe becomes too large, there will be too much entropy in the universe for life?