No.2
I am sure these people would say something along these lines;
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It’s very early days for the findings reported in the paper. Even if the shapes of athletes’ feet determine their sprinting capability, they are a long way from being able to predict anything on the basis of foot geometry.
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There are many, many factors that determine sprinting performance besides foot and ankle mechanics, and it is not clear what the importance of foot mechanics is relative to those other factors.
As scientists, I am sure they will conduct further research over the years to come. However, it is surely a move forward in one way or another. I personally would always encourage people to conduct all sorts of testing but would judge each research on its own merit. These findings, I am sure, could be interpreted by some as very accurate, while others would be dismissive. It is all relative and depends on an individual, as we are all different.