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We have some pretty good ideas about just how "lumpy" the explosion of the big bang should have been. And yes, the best theories in cosmology disagree with the recent observations highlighted in this article. On the other hand, those cosmological theories are rooted in extremely strong physics which does things like predict various attributes of particles that have been measured extremely precisely and were predicted correctly. So the Hubble tension is real. My money is on the theory needing revising, but how? There are no great candidates for something to replace the standard model and our best theories in cosmology. There are plenty of candidates, but no obvious methods to choose a best one. This is science! Remember, the most exciting words in science are, "huh, that's odd." The Hubble tension is extremely odd!