If anyone is looking for groundbreaking SF, here are the Neal Stephenson books I would recommend:
Snow Crash - A weird, wonderful, and oddly prescient story taking place in the very near future, published in 1992. This is the book where the words Avatar and Metaverse were first seen, where the software Earth (now Google Earth) is used. Then you get to about page 200 and your mind is blown when you finally understand how the author has connected Sumerian legends, languages, and... hacking the brain stem
No other story compares.
The Diamond Age - Maybe a generation after the world of Snow Crash when nanotechnology is common, countries no longer exist and people are affiliated to tribes without borders. An interactive book is created that will guide the education of a young girl from an influential family, and its two clandestine copies find their ways into the hands of the inventor's daughter and a random girl. It will shape their lives and groom them, leading them to excellence in their own ways. What makes a human? How are societies organized? What are the relative merits of societal norms through history as well as Eastern vs Western ways of thought? These are all issues this book deals with, while also pondering the next technological paradigm shift: The Seed. Because it is not enough for Neal Stephenson to explore a world changed beyond recognition with Nanotechnology and he has to look beyond, to the next big revolution.
Cryptonomicon - Excellent math-heavy story on two timelines, one around code breakers working on Enigma during WWII and the other about their descendants setting up a data haven (like a tax haven but for data) on an island. The ending that brings together the two timelines is nothing short of sublime.
Anathem - Brilliantly brainhurty, with fantastic worldbuilding. This book is long, complicated, and impossible to summarize, with large portions dedicated to mathematical, philosophical, and scientific discussions.
Seveneves - The moon inexplicably disintegrates and a race starts to establish humanity in orbit once it becomes clear that its pieces will gradually destroy life on Earth. The story that follows is long, detailed, and covers thousands of years including the return back to Earth. This is a great book that explores original ideas, although I wasn't a big fan of the last third.