Well I'm not speaking for the developers on this one but if you think of the difference between how a road would need to be generated on a chunk-by-chunk generate-as-you-go basis versus how they might be generated say, after major cities have been generated first, you have much more control over the way said roads might be generated (and also towns and everything else). I can imagine many advantages to how such a system might generate more realistic and reliably believable road systems. Probably less problems with roads randomly ending or erupting in a sheer cliff for example.
Also it sounds like the whole system managed to decouple the idea that roads essentially generate towns, and now it's almost the other way around. Decoupling the idea that the roads dictate where the towns land would allow a developer the ability to add roads at any point.
Also it sounds like the whole system managed to decouple the idea that roads essentially generate towns, and now it's almost the other way around. Decoupling the idea that the roads dictate where the towns land would allow a developer the ability to add roads at any point.
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