This isn't so much an argument that we're not close to the limit, but that the limit seems to increasingly be in a direction no-one thought of before. Look at

This isn't so much an argument that we're not close to the limit, but that the limit seems to increasingly be in a direction no-one thought of before. Look at Shaq and Bolt, as mentioned, or Jonah Lomu in rugby, or Rob Gronkowski in the NFL, or Stephen Curry in basketball. The idea that you can get someone who's so good that it changes how the game is played, making everyone else completely irrelevant keeps turning up. It's not just that there's extreme outliers, but that in many areas, we're finding that the extreme outlier you need to counter what currently works is something other than the current formula that works, but moreso. Similarly, Google didn't make a better directory, they made a scaling search engine. Ford made a car, not a better horse and carriage, Uber made a scalable admin structure for taxi payments, not a better taxi company, and Apple made a better mobile internet access device, not a better mobile phone. It's the old idea the Bauhaus school tried to address (that everyone now copies by looking at the output, rather than the concept), of trying to find a new, better way of addressing the problem, not an improvement on the current solution.