Incidentally some people count the Roman Republic when talking about how long the Roman Empire lasted, which is technically incorrect, but in a sense maybe it's not. Most of the expansionism was during the Republic period, and the demotion of the Roman Senate is an example of how collapse of centralized power isn't so immediately inevitable, don't you think?
In that case it crumbled after ~1500 years.
> Incidentally some people count the Roman Republic when talking about how long the Roman Empire lasted, which is technically incorrect, but in a sense maybe it's not. Most of the expansionism was during the Republic period, and the demotion of the Roman Senate is an example of how collapse of centralized power isn't so immediately inevitable, don't you think?
Now we're at 1700, 1800 years.
Honestly this is a silly thing to nitpick, particularly when we all seem to agree that power structures can be virtually immortal on human timescales.
How long have we been waiting for North Korea to collapse? The Soviet Union already collapsed, but what do we have now in Russia? China appears to be ascendant and simultaneously accelerating towards a nightmarish Orwellian dystopia with no signs of ever slowing down.
We can't afford to just wait for these things to run their course like a case of the flu. It requires will-power and a bit of courage.