The technology stayed stagnant for 30 years
Based on the trailer, most of the technologies that existed in 2019 are still in use in 2049, along with the major corporations whose emblems dominate the landscape (Atari). From the book we infer that the fall out from nuclear war has changed, as well as slowed down human progress as most of the technology is focused on Off World colonization, but I found it interesting that the world of Blade Runner 2049 still looks like it did in 2019. Sure there are those holographic VR ads but that seems rather archaic since holograms have been part of the Sci-Fi visualscape for decades now.
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