Changelog

1 July 2025
- Added tech: Alum
- Added connection: Alum -> Aluminium

29 June 2025
- Added tech: Measles vaccine
- Added connection: Polio vaccine -> Measles vaccine

27 June 2025
- Added tech: Virtual assistant
- Added tech: Stealth aircraft
- Added connection: Multi-touch smartphone -> Virtual assistant
- Added connection: Speech recognition software -> Virtual assistant
- Added connection: Long short-term memory -> Virtual assistant
- Added connection: Convolutional neural network -> Virtual assistant
- Added connection: Virtual assistant -> Smart speaker
- Added connection: Surface-to-air missile -> Stealth aircraft
- Added connection: Supercomputer -> Stealth aircraft
- Added connection: Radar -> Stealth aircraft
- Added connection: Fighter aircraft -> Stealth aircraft
- Added connection: Statistical language model -> Speech recognition software

25 June 2025
- Added tech: Portable operating system
- Added connection: Integrated circuit computer -> Computer mouse
- Added connection: Operating system -> Portable operating system
- Added connection: Time-sharing -> Portable operating system
- Added connection: Lidar -> Robotaxi

24 June 2025
- Added tech: Computer mouse
- Added tech: Baking powder
- Added tech: Sodium bicarbonate
- Added tech: Cream of tartar
- Added connection: Cream of tartar -> Baking powder
- Added connection: Sodium bicarbonate -> Baking powder

20 June 2025
- Added tech: Phage therapy
- Added tech: Bacteriophages
- Added tech: Benzene
- Added connection: Discovery of viruses -> Bacteriophages
- Added connection: Bacteriophages -> Phage display
- Added connection: Bacteriophages -> Phage therapy
- Added connection: Smallpox vaccine -> Bacteriophages
- Added connection: Chamberland water filter -> Bacteriophages
- Added connection: Neon -> Isotopes
- Added connection: Public gas lighting -> Benzene

18 June 2025
- Added tech: Operating system
- Added connection: Stored-program computer -> Operating system

16 June 2025
- Added tech: Electroconvulsive therapy
- Added tech: Convulsive therapy
- Added tech: Tuberculosis vaccine
- Added connection: Smallpox vaccine -> Tuberculosis vaccine
- Added connection: Convulsive therapy -> Electroconvulsive therapy

14 June 2025
- Added tech: Timpani
- Added connection: Drum -> Timpani

13 June 2025
- Added tech: Palm-leaf manuscript
- Added tech: Birch bark manuscript
- Added tech: Ivory carving

12 June 2025
- Added tech: Antivirus software
- Added tech: Philo's thermoscope
- Added connection: Home computer -> Antivirus software
- Added connection: Philo's thermoscope -> Thermoscope

11 June 2025
- Added tech: Autoclaved aerated concrete
- Added tech: Discovery of viruses
- Added tech: Chamberland water filter
- Added tech: Autoclave
- Added connection: Flute -> Western concert flute
- Added connection: Modern Portland cement -> Autoclaved aerated concrete
- Added connection: Pressure cooker -> Autoclave
- Added connection: Autoclave -> Autoclaved aerated concrete
- Added connection: Chamberland water filter -> Discovery of viruses
- Added connection: Agar plate -> Discovery of viruses
- Added connection: Tobacco -> Discovery of viruses

10 June 2025
- Added tech: Photonic crystal
- Added tech: Genetic code
- Added tech: Messenger RNA
- Added tech: Petroleum jelly
- Added connection: Photonic crystal -> Photonic-crystal fiber
- Added connection: Kerosene -> Petroleum jelly
- Added connection: Petroleum as fuel -> Petroleum jelly
- Added connection: Messenger RNA -> mRNA vaccine
- Added connection: DNA as the carrier of information -> Structure of DNA
- Added connection: Structure of DNA -> Genetic code
- Added connection: Central dogma of molecular biology -> Genetic code
- Added connection: Central dogma of molecular biology -> Messenger RNA

9 June 2025
- v.1.0.2: Add display settings
- Added tech: Bass guitar
- Added tech: Lap steel guitar
- Added tech: Double bass
- Added tech: Marimba
- Added connection: Marimba -> Marimbaphone
- Added connection: Xylophone -> Marimba
- Added connection: Double bass -> Bass guitar
- Added connection: Modern guitar -> Lap steel guitar
- Added connection: Lap steel guitar -> Electric guitar
- Added connection: Lap steel guitar -> Bass guitar

8 June 2025
- Added tech: Cyanoacrylate
- Added tech: Zoom lens
- Added tech: Vibraphone
- Added tech: Marimbaphone
- Added tech: Corrugated fiberboard
- Added tech: Trumpet with pistons
- Added tech: Tuba
- Added tech: Repeating circle
- Added tech: Reflecting circle
- Added tech: Cardboard
- Added tech: Oboe
- Added tech: Bassoon
- Added tech: Dulcian
- Added tech: Trombone
- Added tech: Clavichord
- Added tech: Shawm
- Added tech: Buisine
- Added connection: Papermaking -> Cardboard
- Added connection: Cardboard -> Corrugated fiberboard
- Added connection: Corrugated fiberboard -> Pre-cut cardboard box
- Added connection: Movie camera -> Zoom lens
- Added connection: Reflecting circle -> Repeating circle
- Added connection: Telescope -> Reflecting circle
- Added connection: Octant -> Reflecting circle
- Added connection: Trumpet -> Buisine
- Added connection: Buisine -> Trombone
- Added connection: Marimbaphone -> Vibraphone
- Added connection: Buisine -> Trumpet with pistons
- Added connection: Buisine -> Tuba
- Added connection: Pipe organ -> Clavichord
- Added connection: Shawm -> Oboe
- Added connection: Dulcian -> Bassoon
- Added connection: Shawm -> Dulcian
- Added connection: Aulos -> Shawm
- Added connection: Violin, viola, and cello -> Double bass
- Added connection: Viola da gamba -> Double bass

7 June 2025
- Added tech: Quantum annealing
- Added tech: Transmon
- Added tech: Charge qubit
- Added tech: Flux qubit
- Added tech: Mammal cloning
- Added tech: Artificial heart
- Added tech: SQUID
- Added tech: Dilution refrigerator
- Added tech: Josephson junction
- Added tech: Animal cloning from adult cells
- Added tech: Animal cloning
- Added tech: Kroll process
- Added tech: Helium-3
- Added tech: Tritium
- Added tech: Nuclear fusion
- Added tech: Deuterium
- Added tech: Electric chainsaw
- Added tech: Somatic cell nuclear transfer
- Added tech: Hunter process
- Added tech: Indium
- Added tech: Bayonet
- Added connection: Mammal cloning -> Induced pluripotent stem cell
- Added connection: Titanium -> Hunter process
- Added connection: Magnesium -> Kroll process
- Added connection: Hunter process -> Kroll process
- Added connection: Kroll process -> Lithium battery pacemaker
- Added connection: Josephson junction -> SQUID
- Added connection: Superconductors -> Josephson junction
- Added connection: Magnetometer -> SQUID
- Added connection: Quantum tunneling -> Josephson junction
- Added connection: Somatic cell nuclear transfer -> Animal cloning
- Added connection: Animal cloning from adult cells -> Mammal cloning
- Added connection: Animal cloning -> Animal cloning from adult cells
- Added connection: Frog pregnancy test -> Animal cloning from adult cells
- Added connection: Transmon -> Quantum computer
- Added connection: Dilution refrigerator -> Quantum computer
- Added connection: Charge qubit -> Transmon
- Added connection: Josephson junction -> Charge qubit
- Added connection: Cyclotron -> Nuclear fusion
- Added connection: Quantum tunneling -> Nuclear fusion
- Added connection: Nuclear fusion -> Helium-3
- Added connection: Nuclear fusion -> Hydrogen bomb
- Added connection: Helium-3 -> Dilution refrigerator
- Added connection: Isotopes -> Helium-3
- Added connection: Isotopes -> Deuterium
- Added connection: Deuterium -> Nuclear fusion
- Added connection: Nuclear fusion -> Tokamak
- Added connection: Hampson–Linde air liquefaction -> Deuterium
- Added connection: Isotopes -> Tritium
- Added connection: Mass spectrometer -> Deuterium
- Added connection: Quantum tunneling -> Quantum annealing
- Added connection: Flux qubit -> Quantum annealing
- Added connection: Josephson junction -> Flux qubit
- Added connection: Arquebus and matchlock -> Bayonet
- Added connection: Indium -> Blue LED
- Added connection: Chromatography -> DNA ligase

6 June 2025
- Added tech: Domestication of millet
- Added connection: Irrigation -> Shaduf

5 June 2025
- v1.0.1: Create changelog
- Added tech: Ostwald nitric acid process
- Added tech: Leavened bread
- Added tech: Domestication of potatoes
- Added connection: Restriction enzymes -> DNA profiling
- Added connection: Domestication of wheat -> Leavened bread
- Added connection: Leavened bread -> Electric toaster
- Added connection: Nitric acid -> Ostwald nitric acid process

4 June 2025
- Added tech: Advanced Encryption Standard
- Added tech: Data Encryption Standard
- Added tech: Hardware security module
- Added tech: Modern cryptography
- Added tech: One-time pad
- Added tech: Frequency analysis
- Added tech: Dhow
- Added tech: Domestication of coconuts
- Added connection: One-time pad -> Modern cryptography
- Added connection: Information theory -> Modern cryptography
- Added connection: Modern cryptography -> Public-key cryptography
- Added connection: Automatic teller machine -> Hardware security module
- Added connection: Public-key cryptography -> Digital currency
- Added connection: Hardware security module -> Data Encryption Standard
- Added connection: Data Encryption Standard -> Advanced Encryption Standard
- Added connection: Modern cryptography -> Hardware security module
- Added connection: Modern cryptography -> Data Encryption Standard
- Added connection: Braille -> Optacon
- Added connection: Lashed-lug boat building -> Dhow
- Added connection: Domestication of coconuts -> Dhow
- Added connection: Lateen and settee sail -> Dhow

3 June 2025
- Added tech: Paper clip
- Added tech: Aniline
- Added tech: Paddy field
- Added connection: Domestication of rice -> Paddy field
- Added connection: Indigo dye -> Aniline
- Added connection: Aniline -> Paracetamol

2 June 2025
- Added tech: Laser cutting
- Added tech: Carbon-dioxide laser
- Added tech: Nd:YAG laser
- Added connection: Eyeglasses -> Telescope
- Added connection: Microlith -> Sickle
- Added connection: Hafting -> Sickle
- Added connection: Laser -> Carbon-dioxide laser
- Added connection: Laser -> Nd:YAG laser
- Added connection: Neodymium -> Nd:YAG laser
- Added connection: Nd:YAG laser -> Laser cutting
- Added connection: Carbon-dioxide laser -> Laser cutting

26 May 2025
- v1.0: First public release

9 November 2024
- v0.0: Start of app development