![Roman vs. Modern Aqueduct [700x464]](https://pic8.co/sh/8wF0bk.jpg){kind=link}
Despite the "gay drug part". How many "modern" aqueducts have any chance of still being usable in 2k years. I know there are some old ones that were built in medieval Europe but there are still aqueducts that were built 2k years ago that are in use today.
They really don't "build them like they used to".
Roman cement lasts thousands of years, versus ours which lasts 50-100 years if you are lucky. I think it has something to do with volcanic ash and taking longer to cure.
I was reading something a year or so ago that they think they 'finally' think they know why it not only lasts so long but can also cure in water. Details were more or less withheld. Not saying they had some "magic" or something like that. Just that the modern people either cant handle what/how it works because "my feels and odd ingredient" or "this will destroy profits for entire industries for hundreds of years at best".
I am leaning toward option number 2.
No doubt in my mind it's number two.
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