9 July 2025 - Added tech: Fire-control system - Added tech: Dumaresq - Added tech: Tide-predicting machine - Added tech: Hydrochloric acid - Added tech: Aqua regia - Added tech: Ammonium chloride - Added connection: Ammonium chloride -> Aqua regia - Added connection: Nitric acid -> Aqua regia - Added connection: Ammonium chloride -> Hydrochloric acid - Added connection: Sulfuric acid -> Hydrochloric acid 6 July 2025 - Added tech: Box kite - Added tech: Kite experiment - Added tech: Kite - Added connection: Kite -> Box kite - Added connection: Kite -> Kite experiment - Added connection: Kite experiment -> Lightning rod - Added connection: Leyden jar -> Kite experiment - Added connection: Box kite -> Airplane - Added connection: Papermaking -> Kite - Added connection: Motorcycle -> Rotary engine 5 July 2025 - Added tech: Proportional counter - Added tech: Geiger counter - Added tech: Radial engine - Added tech: Rotary engine - Added connection: Radioactivity -> Geiger counter - Added connection: Geiger counter -> Proportional counter - Added connection: Tin can -> Hovercraft - Added connection: Handheld hair dryer -> Hovercraft - Added connection: Four-stroke engine -> Rotary engine - Added connection: Rotary engine -> Radial engine - Added connection: Radial engine -> Hovercraft - Added connection: Gasoline as fuel -> Airplane 4 July 2025 - Added tech: Leaded gasoline - Added tech: Gasoline as fuel - Added connection: Lead smelting -> Rechargeable battery - Added connection: Coal gas and gas lighting -> Four-stroke engine - Added connection: Kerosene -> Diesel engine - Added connection: Kerosene -> Gasoline as fuel - Added connection: Gasoline as fuel -> Leaded gasoline - Added connection: Gasoline as fuel -> Automobile - Added connection: Gasoline as fuel -> Shukhov cracking process - Added connection: Four-stroke engine -> Gasoline as fuel - Added connection: Gasoline as fuel -> Liquid-propellant rocket 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