When any athlete beats their opposition by a large margin at the international level, there are always suspicions that an artificial aid has been used.
I have always thought that when something is too good to be true, it often is. At the Olympic Games, there were two athletes that dominated the opposition and surprised many: Bolt and Phelps. Why have the questions not been asked?
As in many of these cases, time will tell, and then people may be saying ‘why did we not see it? It was right in front of my eyes”.