We have proof: humans are capable of running a marathon distance in less than two hours. That is the simplest conclusion to draw from Eliud Kipchoge's incredible feat in Vienna in the early hours of Saturday morning, when the Kenyan became the first man to break a barrier that for so long had been deemed impossible.
And irrespective of anything else, it truly was astonishing. It was certainly captivating. It was, perhaps, superhuman. His finishing time of one hour, 59 minutes and 40 seconds will be remembered forever and he deserves every accolade that will be bestowed upon him.
Yet for all the undoubted brilliance of the greatest marathon runner in history's accomplishment, this was also a feat of technology. For many, it was not sport but a science experiment conducted by people with self-serving interests, despite the stated tag line of wanting to prove "No Human Is Limited".
The chemical company Ineos had spent a reported £15 million on this event and every element was conducted with impressive military precision. From the relaid road cutting through the Prater park to the bright green grid projected by laser from the pacing car and ensuring a near-perfect even speed; from the flawless mid-run changeovers in pacemaker personnel to every steward being equipped with a broom to sweep away any falling leaves. Nothing - absolutely nothing - was left to chance.