Excerpt from A Past Outside of Time Technology Explosion on Trisolaris

Exactly when the rate of Trisolaran technological progress had shifted from constant to explosive was a mystery. Some scholars believed that the acceleration began before the Crisis Era; others believed that the forward leap didn’t happen until the Deterrence Era. There was, however, general consensus on the causes for the technology explosion.
First, Earth civilization had a tremendous impact on Trisolaran civilization—on this point, at least, the Trisolarans likely didn’t lie. Since the arrival of the first sophon, the massive inflow of human culture profoundly changed Trisolaris, and some human values resonated with the Trisolarans. Trisolaran society broke down the barriers to scientific progress imposed by the extreme totalitarian political system that had been adopted as a reaction to the chaotic eras, encouraged freedom of thought, and began to respect the individual. These changes might have triggered ideological transformation movements akin to the Renaissance in that distant world, leading to leaps in scientific and technological progress. This must have been a glorious period in Trisolaran history, but the specific details were unknown.
A second possibility was only a guess: The exploratory sophon missions sent in other directions in the universe were not fruitless, as the Trisolarans claimed. Before being blinded, they might have found at least one other civilized world. If so, Trisolarans might have not only received technological knowledge from this other civilization, but also important information about the condition of the dark forest in the universe. If so, Trisolaris far surpassed the Earth in every domain of knowledge.

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