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Universe of Zeroes and Ones ( () (ちゅう) (つく) る0と1 Uchū o Tsukuru 0 to 1) is the two hundred and fifth chapter of the Dr. Stone manga.

Summary

The chapter begins with Sai insisting that he's not a genius, and that Ryusui is exaggerating. Ryusui retorts by saying he's been denying his talents since he was four years old, revealing a moment when Sai had accidentally multiplied two long numbers rather than adding them. Sai insists that mental math is pointless since a computer could do the same calculation in less time.

Ryusui states he wants to use Sai's abilities, prompting another flashback about Sai where he's shown to be hiding in the rafters of the house playing a handheld game. Over the years, Ryusui always told Sai to do what was expected of him and also do what he wanted, however Sai said that's too much for him to handle. Ryusui also always chased Sai up for his mathematical knowledge, such as calculating ideal racing lines and computing fluid dynamics for ship sails. Because of the pressure, Sai escaped to India where he could follow his one passion: programming.

His dream is crushed when he realizes there aren't any computers yet, and warily asks Senku how long it would take to make a computer. Senku replies that it'll be five years at minimum before they can make a working computer. Sai, stressed, cries and asks why they would revive a guy like him when there's nothing he can achieve.

Over dinner, the other members of the Kingdom of Science discuss what can be done about Sai as having someone unwilling to work could mean death when retaliation by Why-man mid-spaceflight is possible. They need to be able to recalculate very quickly in order to survive.

Alone in his room, Sai also says he needs to survive— until he can get his computer. In the mean time, unsure of what to do, he picks up a charcoal pencil and decides that all he can do is code.

The next morning, Francois brings a plate of curry to his door, but Sai doesn't come out. The others decide to peek into his room, revealing that every open wall in his room is covered in machine code. The code is for Dragon Quest, prompting Senku to change his plans and make a simple computer in the Stone World.

Characters in Order of Appearance

Chapter Notes

  • Sai doesn't consider himself a mathematician, but a programmer instead.
  • Sai fled to India to escape both Nanami Corp.'s high expectations of him and also to avoid Ryusui's constant demand for his skills.
  • The Kingdom needs Sai's skills to keep them safe during the journey to the moon.
  • Sai wrote a program for Dragon Quest on the walls of his room in machine code.
  • Senku decides they're building a computer.

Trivia

  • The ways Senku, Chrome and Kohaku were shown thinking about the math problem proposed was a reference to the arithme-battle side story found after chapter 18.
  • A flashback shows Ryusui using the word "desire" for things, even as an infant.
    • It may have been his first word.

Site Navigation

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Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
Volume 7 535455565758596061Extras
Volume 8 626364656667686970Extras
Volume 9 717273747576777879Extras
Volume 10 808182838485868788Extras
Volume 11 899091929394959697Extras
Volume 12 9899100101102103104105106Extras
Volume 13 107108109110111112113114115Extras
Volume 14 116117118119120121122123124Extras
Volume 15 125126127128129130131132133Extras
Volume 16 134135136137138139140141142Extras
Volume 17 143144145146147148149150151Extras
Volume 18 152153154155156157158159160
Volume 19 161162163164165166167168169
Volume 20 170171172173174175176177178
Volume 21 179180181182183184185186187
Volume 22 188189190191192193194195196
Chapters not yet in tankōbon format 197198199200201202203204205206207208209210211
[v  e]
Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526272829303132333435
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes 35
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes
South America Arc
Chapters 170171172173174175176177178179180181182183184185186187188189190191192193
Episodes
New Stone World Arc
Chapters 194195196197198199200
Episodes
Europe Arc
Chapters 201202203204205206207208209210211
Episodes
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