The Empire That Chose Differently
Two continental empires, the same administrative problems, opposite outcomes. Nobody in either experienced it as a choice. They simply decided, year after year, what to fund.
Put the Han dynasty and the Roman Empire side by side and the resemblance is almost uncanny.
Both are continental empires governing enormous, diverse populations. Both run sophisticated administrative systems over long distances. Both build road networks that outlast them. Both maintain standing armies, manage frontier problems, and engineer at a scale that still impresses. They overlap in time. Neither knew much about the other.
Then look at what each one did with knowledge, and they diverge completely.
Rome consumed Greek learning and produced almost none of its own. The Han generated new knowledge in mathematics, astronomy, medicine and technology, and then did the harder thing: built institutions to keep producing it after the people who started it were dead.
Rome built an empire that required knowledge but did not value it. The Han built one that required it and paid for it.
The specifics matter, because "China was ahead" is the kind of claim that gets asserted and then not cashed.