Not going one?

What does "not going one" mean?

Context:

In novels (http://en.wikipedia.org/wiki/The_City_and_the_Stars) and short stories ("http://en.wikipedia.org/wiki/TheSentinel%28short_story%29" upon which http://en.wikipedia.org/wiki/2001:_ASpace_Odyssey%28novel%29 was based), Clarke presents ultra-advanced technologies. In http://en.wikipedia.org/wiki/Against_the_Fall_of_Night, the human race regresses after a full billion years of civilization, and faces remnants of past glories such as roadways. Physical possibilities are inexplicable from their perspective.
A fourth law has been added to the canon, despite Sir Arthur Clarke's declared intention of not going one better than Sir Isaac Newton. Geoff Holder quotes: "For every expert, there is an equal and opposite expert" in his book 101 Things to Do with a Stone Circle (The History Press, 2009), and offers as his source, Arthur C. Clarke's Profiles of the Future (new edition, 1999).