What is the absolute limit for human athletes? There are The Olympics every 4 years and always have been beating different world records, some by staggering margins. In September, Eliud Kipchoge got an atomic mark he almost beat the mark of two hours in 42 kilometres. It is clear, that there has been a dramatic improvement in athletic ability over the past century. This is reflected by the continuous improvement of world records in track and field athletics from the early 1900s, which tend to follow a linear rather than an exponential trend. However, this progress is not distributed evenly across the various disciplines of track and field athletics. In most instances, the progression curve has flattened out over the past 20 years (for example, in running and jumping), while in some sports (for example, shot put) no improvement has been recorded since the mid-1990s. And the question is: are there limits in this progression? , I think that the use of mechanical aids, the introduction of genetic or other forms of legal doping could help to beat the marks. What is your opinion?.