sophon
Names: sophonsophonsTomokosophon blockexploratory sophon missions
First appears in Book 1: The Three-Body Problem, chapter 33 (33)
Appearances
What you know
Book 1: The Three-Body Problem
- Ch 33A sophon is a proton unfolded into two dimensions, etched with giant integrated circuits, then folded back to higher dimensions as the smallest artificial intelligence.
- Ch 33Multiple sophons linked by quantum entanglement form a mutual-sensing formation that can sense the macro world at any frequency.
- Ch 33Sophons can borrow energy from vacuum to move near light speed, and can reassemble themselves after being smashed in collisions.
- Ch 33Sophons will hide in Earth's particle accelerators, taking the place of target particles and giving false results to block Earth's fundamental physics.
- Ch 33A sophon can unfold into a two-dimensional plane that wraps around Earth and can be tuned transparent at cosmic microwave background frequencies, making background radiation flash in human eyes.
- Ch 33A high-energy sophon passing through film repeatedly can expose dots forming letters, numbers or pictures; it can do the same on human retinas.
- Ch 34Sophons block fundamental physics research, which Ding and Wang see as trapping human technology at a limited level.
Book 2: The Dark Forest
- Ch 1The sophon lets Trisolaris hold real-time conversations with Evans by displaying text on his retinas.
- Ch 2A microscopic intelligent particle that interferes with physics experiments and monitors Earth; a Chinese colonel told Raeder its Chinese name is the Japanese woman's name Tomoko.
- Ch 2Sophons can make everything in the human world transparent to Trisolaris, but cannot read human thoughts.
- Ch 2Sophons make Earth transparent to the Trisolarans: they read all text, files and storage media but cannot read human thoughts.
- Ch 3The sophons have locked up fundamental theory advances needed for quantum and next-generation computers, so computing intelligence will stay limited.
- Ch 3Sophons are everywhere and can overhear conversations, including Luo Ji and Zhuang Yan's, possibly passing them to the Trisolar High Consul.
- Ch 3Sophons have frozen fundamental science, limiting advances in computing and AI.
- Ch 4Sophon lockdown of frontier physics makes next-generation and quantum computers unlikely, limiting computing progress.
- Ch 4The sophons have halted space-based high-energy physics research, leaving humanity only classical physics, quantum mechanics and embryonic string theory.
- Ch 4Sophons hang near Luo Ji and can overhear him, including his talk with Kent.
- Ch 5The Three Body side used sophon-transmitted information to learn the details of Zhang Beihai's killings.
- Ch 6Block human fundamental physics progress, stalling technology; Hines says they are waiting for his and Yamasuki's research just as humans await them.
- Ch 6Sophons did not record Rey Diaz's conversations with Cosmo and had not noticed him before he became a Wallfacer.
- Ch 7Sophons still lock down fundamental physics, so human science remains deadlocked despite advances in fusion and weapons.
- Ch 8The sophon block made human artificial intelligence unable to command a space battle.
- Ch 9Three mirror-surfaced spheres, sophon unfoldings, appeared above Luo Ji and displayed red text ordering him to put down the gun before discussing terms.
- Ch 10A sophon unfolded into a mirrored sphere beside the family and displayed text from a Trisolaran.
Book 3: Death's End
- Ch 7Sophons spy on humanity at lightspeed and block fundamental physics research, making future technological progress uncertain, per Wade.
- Ch 7Sophons make human plans fully transparent to the Trisolarans, who observe meetings; Wade turns this into an advantage for his plan.
- Ch 15A sophon unfolded into low dimensions aboard Bronze Age to link the ship to Earth by quantum communication.
- Ch 20After they stopped interfering with particle accelerators, Earth scientists could verify core Trisolaran physics experimentally, building confidence in the transmitted knowledge.
- Ch 22Sophons gave Gravity intelligence on Blue Space, but lose their quantum ties to home in the region Gravity entered thirty AU from Blue Space.
- Ch 23Every sophon sent to explore the galaxy entered a blind region and lost contact with home; the longest-lasting reached only seven light-years.
- Ch 23Once quantum entanglement between sophons is broken it cannot be restored, so a sophon entering a blind region is lost forever.
- Ch 23Before being blinded, sophons explored only two nearby planet-bearing stars, neither showing signs of life or civilization.
- Ch 27Sophons can transmit Luo Ji's gaze to the enemy on Trisolaris.
- Ch 33Since the first sophon arrived, a massive inflow of human culture profoundly changed Trisolaris.
- Ch 33Scholars guessed that the exploratory sophons sent in other directions may have found at least one other civilized world before being blinded, contrary to Trisolaran claims.
- Ch 36The sophons went blind, so Trisolaris and the droplets no longer know what happens aboard Gravity.
- Ch 46Probably followed the Staircase probe through its acceleration leg to gather its final flight parameters, enabling its later interception.
- Ch 47A sophon unfolds into a reflective sphere a few meters from the dinghy and projects a live image from several light-years away.
- Ch 47The conversation is limited by warning lights: green means talking is allowed, yellow is a warning, and red would signal death.
- Ch 47People only half-believed sophons were withdrawn; they are precious to the Trisolarans, who cannot build new ones for a long time.
- Ch 48Most people now believe the sophons are gone from the Solar System, but sophon-free rooms are still used as a precaution.
- Ch 54Cheng Xin leans toward thinking none are present in the Solar System, but chooses caution.
- Ch 60The trail within the Trisolaran system likely explains why Sophon found Trisolaris more dangerous than the Solar System, hastening the dark forest strike on it.
- Ch 65Humans still cannot be sure sophons have left the Solar System, so Halo City's lab was a sophon-free room.
Connections
- created byOur Lordlaunched them to explore the galaxy
- related toTrisolarissophons carried human culture to Trisolaris
Key moments
- Book 1 · Ch 33Trisolaran explanation of the Miracle Plan
A Trisolaran explains how sophons can display miracles to terrify and mislead human scientists and why two sophons are kept home for real-time monitoring via entanglement.
- Book 1 · Ch 34Drunken despair
Wang Miao and Ding Yi, very drunk, tell Da Shi that science is doomed by the sophons and toast humans as bugs about to go extinct.
- Book 2 · Ch 2Second Wallbreaker stopped from suicide
As the man prepares to shoot himself in a basement, a sophon text tells him not to, saying he is needed.
- Book 2 · Ch 2Wallbreaker and the sophon
The sophon tells the Wallbreaker the Trisolarans will stop humanity's flight and asks for ETO help; he insists human disputes over who goes will prevent escape.
- Book 2 · Ch 9Final showdown with Trisolaris
Luo Ji, pistol to his heart, announces the bomb broadcast deterrent. Sophons appear, and Trisolaris agrees to halt the probe transmissions and redirect the nine droplets, but not turn the fleet.
- Book 2 · Ch 10Trisolaran operator speaks with Luo Ji
Through a sophon, the elderly Trisolaran who sent the original warning protests that humanity is not the only species with love, and proposes encouraging love elsewhere in the universe; Luo Ji agrees.
- Book 3 · Ch 7Wade proposes sending a person
Wade explodes that they will not stop and proposes sending a live hibernating human into the Trisolaran Fleet. The group sees that sophon transparency could work in the plan's favor.
- Book 3 · Ch 15Recall message and confirmation
Ten days after Earth's signals stopped, Fleet Command's message ordered Bronze Age and Blue Space home. A sophon channel then confirmed it, and Bronze Age turned back.
- Book 3 · Ch 20Trisolaris transmits knowledge to Earth
Trisolaris sends complete systems of basic science to Earth, overwhelming scientists. Humans suspect Earth is being used as a knowledge battery, though sophon interference ends and the physics is verified.
- Book 3 · Ch 22Loss of real-time communication with Earth
A year earlier, with the ships thirty AU apart, Gravity and its droplets entered a region where sophons lost their quantum ties to home, forcing slow neutrino and radio communication with Earth.
- Book 3 · Ch 23Sophons lost in blind regions
Six sophons launched by Trisolaris, and later ones, entered blind regions and lost contact permanently. Only two lifeless star systems were explored beforehand.
- Book 3 · Ch 33Trisolaran technology explosion
Trisolaran technology shifted to explosive progress, likely due to human cultural influence via sophons that loosened totalitarianism, and possibly due to knowledge from another civilization found by exploratory sophons.
- Book 3 · Ch 46Trisolarans capture Yun Tianming's probe
A ship of the First Trisolaran Fleet, probably the one that never decelerated, intercepted the Staircase probe carrying Yun Tianming's brain, likely 30 to 50 years earlier, aided by sophon-gathered flight parameters and luck.
- Book 3 · Ch 47Meeting with Tianming through the sophon
Cheng Xin meets Tianming via sophon, finds him farming aboard a ship, and learns he can't speak freely. They agree he will tell her stories as coded communication, and arrange to meet at 'our star'.