That's silly. Besides, Martin Cooper assigned Rudy Krolopp to be the lead designer on the DynaTAC 8000X. If I recall, John Mitchell was involved as well. So I guess it's a good thing that all two (or three) were born, otherwise we would have no cell phones! And without Newton... no calculus!! And without Euclid... no geometry!!! And without Aristotle...no propositional logic!!!! Getting the point? And besides, these were all much more fundamental contributions than the implementation of technology to create a new device -- and in each case they were independently developed elsewhere ( in the case of calculus, within the same year or so).
Keep Up with TechRepublic