Elite sport is traditionally a celebration of the human, but for how much longer? We watch in awe as athletes perform feats of skill, strength and endurance,  and experience the high drama of triumph and defeat -  but it's all on a human scale, or at least it has been until now. Sport and technology have always been intertwined, but with the advent of AI, this week we're wondering if the human element of sport - the physical dimension, but also the ethical - might be under threat.