EPOCH ADVANCE PREREQUISITE LEADS TO ALLOWS
P#1 Foraging None Agriculture, Herbal Lore exploitation of forest and jungle
P#2 Hunting None Weaponry, Storytelling, The Canoe, Map Making exploitation of grassland, swamp and ocean
P#3 Fire None Pottery, Bronze Working exploitation of tundra and glacier
P#4 Stonecutting None Mining, Masonry exploitation of hills and mountains
P#5 Herding None Agriculture, Roads exploitation of plains and desert
P#6 Paganism None Ceremonial Burial, The Calender shaman
P#7 Agriculture Foraging, Herding Irrigation, Pottery Warehouse, villages
P#8 Mining Stonecutting Bronze Working mining
P#9 Roads Herding Map Making roads
P#10 Herbal Lore Foraging Writing, Medicine
P#11 Weaponry Hunting Archery, Horseback Riding warriors
P#12 Storytelling Hunting Writing
P#13 Pottery Fire, Agriculture Mathematics, The Wheel Granary, Hanging Gardens
P#14 The Canoe Hunting Seafaring canoe, fast travel on rivers
A#1 Archery Weaponry Feudalism archers, Sun Tzu’s War Academy
A#2 Ceremonial Burial Paganism Mysticism, Monarchy Temple, Angkor Wat
A#3 Bronze Working Fire, Mining Iron Working, Currency phalanx, Colossus
A#4 Irrigation Agriculture Canal Building, The Calender irrigation
A#5 Masonry Stonecutting Construction, Mathematics City Walls, Pyramids
A#6 The Calender Paganism, Irrigation The Council, Astronomy Stonehenge
A#7 Horseback Riding Weaponry Chivalry horsemen
A#8 The Council The Calender Code of Laws, Currency Barracks, Town Hall, villages can grow
A#9 Map Making Hunting, Roads Seafaring, Trade explorer
A#10 Writing Herbal Lore, Storytelling Literacy diplomat, Library, Alphabet
A#11 The Wheel Pottery The Plough, Engineering chariot
A#12 Code of Laws The Council Monarchy, The Republic Courthouse
A#13 Mathematics Pottery, Masonry Astronomy, University catapult
A#14 Iron Working Bronze Working Alchemy, Bridge Building, The Plough legion
C#1 Mysticism Ceremonial Burial Philosophy, Mythology Oracle
C#2 Monarchy Code of Laws, Ceremonial Burial Feudalism, The Guild Palace, Great Wall, Monarchy
C#3 Seafaring The Canoe, Map Making Canal Building, Navigation trireme, Harbour, Lighthouse
C#4 Currency Bronze Working, The Council Construction, Trade Marketplace
C#5 Mythology Mysticism Literacy, Monotheism Odyssey
C#6 Philosophy Mysticism Arts, Medicine, Theology
C#7 Canal Building Irrigation, Seafaring Sanitation Grand Canal, canals
C#8 Construction Currency, Masonry Bridge Building, Engineering, The Mill elephant, Colosseum, Aqueduct, Fortress
C#9 Astronomy The Calender, Mathematics Navigation, Optics Copernicus’s Observatory
C#10 Medicine Herbal Lore, Philosophy Alchemy, Chemistry, Sanitation Hospital
C#11 Literacy Writing, Mythology Arts, Printing, The Republic Great Library
C#12 Bridge Building Iron Working, Construction Railroad allows roads across river squares
C#13 Trade Currency, Map Making Banking, The Guild caravan, Marco Polo’s Embassy
C#14 The Republic Code of Laws, Literacy Banking Republic
M#1 Feudalism Archery, Monarchy Chivalry, Trias Politica pikeman, Magna Carta
M#2 The Plough Iron Working, The Wheel The Mill increase maximum yield
M#3 Alchemy Iron Working, Medicine Coal Mining, Gunpowder, Metallurgy
M#4 Chivalry Horseback Riding, Feudalism Monotheism, Leadership Camelot, knights
M#5 Navigation Seafaring, Astronomy Amphibious Warfare, Magnetism Magellan’s Expedition, caravel
M#6 University Mathematics, Philosophy Chemistry, Economics, Engineering University
M#7 The Mill Construction, The Plough Coal Mining, Ecology, Mechanics, Printing Mill, Kinderdike Mills, waterworks
M#8 Monotheism Mythology, Chivalry Fundamentalism, Theology crusaders, Cathedral, Michelangelo’s Chapel
M#9 The Guild Trade, Monarchy Humanism, Metallurgy School
M#10 Engineering Construction, University Empiricism, Gunpowder, Mechanics Leonardo’s Workshop
M#11 Chemistry Medicine, University Explosives, Atomic Theory
M#12 Printing Literacy, The Mill Nationalism, Telecommunication campaign
M#13 Banking Trade, The Republic Colonialism, Economics Bank
M#14 Theology Monotheism, Philosophy Humanism, Trias Politica Inquisition
G#1 Gunpowder Alchemy, Engineering Explosives, Leadership musketeers
G#2 Metallurgy Alchemy, The Guild Electricity cannon, Coastal Fortress
G#3 Mechanics Engineering, The Mill Magnetism, Steam Engine, Theory of Gravity
G#4 Leadership Chivalry, Gunpowder Tactics, Enlightenment dragoons
G#5 Humanism Theology, The Guild Biology, Enlightenment, Communism, Empiricism Utopia
G#6 Magnetism Mechanics, Navigation Electricity, Colonialism galleon
G#7 Coal Mining Alchemy, The Mill Steam Engine
G#8 Arts Literacy, Philosophy Biology, Romanticism Shakespeare’s Theatre
G#9 Empiricism Engineering, Humanism Optics, Steam Engine, Theory of Gravity
G#10 Colonialism Banking, Magnetism Industrialization, Fundamentalism ship of the line, frigate, Dutch East India Company
G#11 Biology Humanism, Arts Ecology, Genetic Engineering, Psychology
G#12 Theory of Gravity Mechanics, Empiricism Flight balloon, Isaac Newton’s College
G#13 Optics Astronomy, Empiricism Quantum Physics, Tactics
G#14 Enlightenment Leadership, Humanism Nationalism Hermitage
E#1 Steam Engine Coal Mining, Empiricism Railroad ironclad
E#2 Sanitation Medicine, Canal Building Refrigeration Sewer system
E#3 Explosives Chemistry, Gunpowder Automobile, Logistics engineers, transform land
E#4 Economics Banking, University The Corporation, Liberalism Stock Exchange
E#5 Tactics Leadership, Optics Mobile Warfare, Amphibious Warfare rifleman, cavalry
E#6 Nationalism Enlightenment, Printing Democracy, Espionage, Romanticism militia, Police Station, Red Cross
E#7 Trias Politica Feudalism, Theology Democracy
E#8 Electricity Magnetism, Metallurgy Steel, Electronics, Radio, Atomic Theory Eiffel Tower
E#9 Democracy Nationalism, Trias Politica Human Rights Statue of Liberty, Democracy
E#10 Romanticism Arts, Nationalism Communism, Liberalism Sydney Opera House
E#11 Railroad Steam Engine, Bridge Building Industrialization Trans-Siberian Railroad, railroad
E#12 Human Rights Democracy Labour Union, Psychology Abolishment of slavery
E#13 Ecology Biology, The Mill Recycling airship, Greenhouse, Yellowstone National Park
E#14 Atomic Theory Chemistry, Electricity Refining, Quantum Physics
I#1 Industrialization Railroad, Colonialism The Corporation, Steel, Communism, Logistics ironclad, Factory
I#2 Liberalism Economics, Romanticism Socialism Women’s Suffrage, Free Market Economy
I#3 Steel Electricity, Industrialization Hydraulics cruiser
I#4 The Corporation Industrialization, Economics Pharmacology, Mass Production, Refining, Electronics freight, Capitalization
I#5 Psychology Biology, Human Rights Cybernetics, Pharmacology, Social Security Freud’s Interpretation of Dreams
I#6 Communism Industrialization, Romanticism Socialism United Nations, Communism
I#7 Refining Atomic Theory, The Corporation Hydraulics, Plastics, Nuclear Fission Power Plant
I#8 Electronics Electricity, The Corporation Espionage, Rocketry, Computers Hydro Plant, Hoover Dam
I#9 Logistics Industrialization, Explosives Algorithms, Radio sappers, transport
I#10 Socialism Communism, Liberalism Labour Union guerrillas, Compulsory Education, Planned Economy
I#11 Hydraulics Refining, Steel Automobile, Flight, Refrigeration, Cargo Pipeline artillery, submarine, offshore platform
I#12 Radio Electricity, Logistics Advanced Flight, Telecommunication destroyer
I#13 Automobile Explosives, Hydraulics Mass Production, Mobile Warfare battleships, Superhighways
I#14 Labour Union Human Rights, Socialism Robotics, Social Security, Tourism
MO#1 Flight Hydraulics, Theory of Gravity Advanced Flight fighter
MO#2 Refrigeration Sanitation, Hydraulics Ceramics, Hydrogen Engine Supermarket, improve farmland
MO#3 Mass Production Automobile, The Corporation Global Marketing, The Laser, Plastics, Recycling Mass transit
MO#4 Espionage Electronics, Nationalism spy
MO#5 Fundamentalism Colonialism, Monotheism Fundamentalism, fanatics
MO#6 Algorithms Logistics Computers, Nuclear Fission Turing Machine
MO#7 Amphibious Warfare Navigation, Tactics Port facility, marines
MO#8 Telecommunication Printing, Radio Advanced Flight, Optical Fibre Television Network
MO#9 Mobile Warfare Tactics, Automobile Combined Arms armour
MO#10 Pharmacology Psychology, The Corporation Somnology Contraception
MO#11 Social Security Psychology, Labour Union Welfare Scheme
MO#12 Quantum Physics Atomic Theory, Optics The Laser, Unified Field Theory
MO#13 Advanced Flight Flight, Telecommunication Combined Arms, Rocketry, Stealth, Tourism bomber, carrier, airport, airbase
MO#14 Nuclear Fission Algorithms, Refining Fusion Power Nuclear Plant, Manhattan Project
INF#1 Rocketry Advanced Flight, Electronics Space Flight AEGIS cruiser, cruise missile, nuclear missile, SAM missile battery
INF#2 Tourism Advanced Flight, Labour Union Virtual Reality Holiday Resort, Disney World
INF#3 Plastics Mass Production, Refining Stealth, Ceramics SS Structural
INF#4 Recycling Ecology, Mass Production Environmentalism Recycling Centre
INF#5 Computers Algorithms, Electronics Robotics, Space Flight, Genetic Engineering Research Lab, Internet
INF#6 Combined Arms Mobile Warfare, Advanced Flight helicopter, paratroopers, hovercraft
INF#7 The Laser Mass Production, Quantum Physics Optical Fibre, Superconductor, Nanotechnology Early Warning System
INF#8 Robotics Computers, Labour Union Cybernetics, Cargo Pipeline howitzer, Manufacturing Plant
INF#9 Space Flight Rocketry, Computers Environmentalism Orbital satellite, Apollo Program
INF#10 Stealth Plastics, Advanced Flight Stealth Bomber, Stealth Fighter
INF#11 Ceramics Plastics, Refrigeration Superconductor SS Component
INF#12 Optical Fibre The Laser, Telecommunications Global Network Communication Network
INF#13 Genetic Engineering Biology, Computers Regeneration Map of the Human Genome
INF#14 Cybernetics Psychology, Robotics Artificial Intelligence SS Module, Biosphere 2
F#1 Superconductor Ceramics, The Laser Fusion Power, Nanotechnology
F#2 Environmentalism Recycling, Space Flight Arcologies, Hydrogen Engine Solar Plant, Green Economy
F#3 Cargo Pipeline Hydraulics, Robotics Arcologies pipeline
F#4 Fusion Power Nuclear Fission, Superconductor Fusion Plant
F#5 Nanotechnology The Laser, Superconductor replicator
F#6 Artificial Intelligence Cybernetics Virtual Reality, Global Network Weather control satellite
F#7 Regeneration Genetic Engineering
F#8 Arcologies Cargo Pipeline, Environmentalism Arcology
F#9 Hydrogen Engine Environmentalism, Refrigeration Gaia Charter
F#10 Global Network Optical Fibre, Artificial Intelligence Global Marketing World Government
F#11 Virtual Reality Tourism, Artificial Intelligence Somnology Holodeck
F#12 Unified Field Theory Quantum Physics Force-field
F#13 Global Marketing Global Network, Mass Production Auction Platform
F#14 Somnology Pharmacology, Virtual Reality Otherworld Dawn
Based on a tech tree by DanQ
Discuss
P#1 Foraging None Agriculture, Herbal Lore exploitation of forest and jungle
P#2 Hunting None Weaponry, Storytelling, The Canoe, Map Making exploitation of grassland, swamp and ocean
P#3 Fire None Pottery, Bronze Working exploitation of tundra and glacier
P#4 Stonecutting None Mining, Masonry exploitation of hills and mountains
P#5 Herding None Agriculture, Roads exploitation of plains and desert
P#6 Paganism None Ceremonial Burial, The Calender shaman
P#7 Agriculture Foraging, Herding Irrigation, Pottery Warehouse, villages
P#8 Mining Stonecutting Bronze Working mining
P#9 Roads Herding Map Making roads
P#10 Herbal Lore Foraging Writing, Medicine
P#11 Weaponry Hunting Archery, Horseback Riding warriors
P#12 Storytelling Hunting Writing
P#13 Pottery Fire, Agriculture Mathematics, The Wheel Granary, Hanging Gardens
P#14 The Canoe Hunting Seafaring canoe, fast travel on rivers
A#1 Archery Weaponry Feudalism archers, Sun Tzu’s War Academy
A#2 Ceremonial Burial Paganism Mysticism, Monarchy Temple, Angkor Wat
A#3 Bronze Working Fire, Mining Iron Working, Currency phalanx, Colossus
A#4 Irrigation Agriculture Canal Building, The Calender irrigation
A#5 Masonry Stonecutting Construction, Mathematics City Walls, Pyramids
A#6 The Calender Paganism, Irrigation The Council, Astronomy Stonehenge
A#7 Horseback Riding Weaponry Chivalry horsemen
A#8 The Council The Calender Code of Laws, Currency Barracks, Town Hall, villages can grow
A#9 Map Making Hunting, Roads Seafaring, Trade explorer
A#10 Writing Herbal Lore, Storytelling Literacy diplomat, Library, Alphabet
A#11 The Wheel Pottery The Plough, Engineering chariot
A#12 Code of Laws The Council Monarchy, The Republic Courthouse
A#13 Mathematics Pottery, Masonry Astronomy, University catapult
A#14 Iron Working Bronze Working Alchemy, Bridge Building, The Plough legion
C#1 Mysticism Ceremonial Burial Philosophy, Mythology Oracle
C#2 Monarchy Code of Laws, Ceremonial Burial Feudalism, The Guild Palace, Great Wall, Monarchy
C#3 Seafaring The Canoe, Map Making Canal Building, Navigation trireme, Harbour, Lighthouse
C#4 Currency Bronze Working, The Council Construction, Trade Marketplace
C#5 Mythology Mysticism Literacy, Monotheism Odyssey
C#6 Philosophy Mysticism Arts, Medicine, Theology
C#7 Canal Building Irrigation, Seafaring Sanitation Grand Canal, canals
C#8 Construction Currency, Masonry Bridge Building, Engineering, The Mill elephant, Colosseum, Aqueduct, Fortress
C#9 Astronomy The Calender, Mathematics Navigation, Optics Copernicus’s Observatory
C#10 Medicine Herbal Lore, Philosophy Alchemy, Chemistry, Sanitation Hospital
C#11 Literacy Writing, Mythology Arts, Printing, The Republic Great Library
C#12 Bridge Building Iron Working, Construction Railroad allows roads across river squares
C#13 Trade Currency, Map Making Banking, The Guild caravan, Marco Polo’s Embassy
C#14 The Republic Code of Laws, Literacy Banking Republic
M#1 Feudalism Archery, Monarchy Chivalry, Trias Politica pikeman, Magna Carta
M#2 The Plough Iron Working, The Wheel The Mill increase maximum yield
M#3 Alchemy Iron Working, Medicine Coal Mining, Gunpowder, Metallurgy
M#4 Chivalry Horseback Riding, Feudalism Monotheism, Leadership Camelot, knights
M#5 Navigation Seafaring, Astronomy Amphibious Warfare, Magnetism Magellan’s Expedition, caravel
M#6 University Mathematics, Philosophy Chemistry, Economics, Engineering University
M#7 The Mill Construction, The Plough Coal Mining, Ecology, Mechanics, Printing Mill, Kinderdike Mills, waterworks
M#8 Monotheism Mythology, Chivalry Fundamentalism, Theology crusaders, Cathedral, Michelangelo’s Chapel
M#9 The Guild Trade, Monarchy Humanism, Metallurgy School
M#10 Engineering Construction, University Empiricism, Gunpowder, Mechanics Leonardo’s Workshop
M#11 Chemistry Medicine, University Explosives, Atomic Theory
M#12 Printing Literacy, The Mill Nationalism, Telecommunication campaign
M#13 Banking Trade, The Republic Colonialism, Economics Bank
M#14 Theology Monotheism, Philosophy Humanism, Trias Politica Inquisition
G#1 Gunpowder Alchemy, Engineering Explosives, Leadership musketeers
G#2 Metallurgy Alchemy, The Guild Electricity cannon, Coastal Fortress
G#3 Mechanics Engineering, The Mill Magnetism, Steam Engine, Theory of Gravity
G#4 Leadership Chivalry, Gunpowder Tactics, Enlightenment dragoons
G#5 Humanism Theology, The Guild Biology, Enlightenment, Communism, Empiricism Utopia
G#6 Magnetism Mechanics, Navigation Electricity, Colonialism galleon
G#7 Coal Mining Alchemy, The Mill Steam Engine
G#8 Arts Literacy, Philosophy Biology, Romanticism Shakespeare’s Theatre
G#9 Empiricism Engineering, Humanism Optics, Steam Engine, Theory of Gravity
G#10 Colonialism Banking, Magnetism Industrialization, Fundamentalism ship of the line, frigate, Dutch East India Company
G#11 Biology Humanism, Arts Ecology, Genetic Engineering, Psychology
G#12 Theory of Gravity Mechanics, Empiricism Flight balloon, Isaac Newton’s College
G#13 Optics Astronomy, Empiricism Quantum Physics, Tactics
G#14 Enlightenment Leadership, Humanism Nationalism Hermitage
E#1 Steam Engine Coal Mining, Empiricism Railroad ironclad
E#2 Sanitation Medicine, Canal Building Refrigeration Sewer system
E#3 Explosives Chemistry, Gunpowder Automobile, Logistics engineers, transform land
E#4 Economics Banking, University The Corporation, Liberalism Stock Exchange
E#5 Tactics Leadership, Optics Mobile Warfare, Amphibious Warfare rifleman, cavalry
E#6 Nationalism Enlightenment, Printing Democracy, Espionage, Romanticism militia, Police Station, Red Cross
E#7 Trias Politica Feudalism, Theology Democracy
E#8 Electricity Magnetism, Metallurgy Steel, Electronics, Radio, Atomic Theory Eiffel Tower
E#9 Democracy Nationalism, Trias Politica Human Rights Statue of Liberty, Democracy
E#10 Romanticism Arts, Nationalism Communism, Liberalism Sydney Opera House
E#11 Railroad Steam Engine, Bridge Building Industrialization Trans-Siberian Railroad, railroad
E#12 Human Rights Democracy Labour Union, Psychology Abolishment of slavery
E#13 Ecology Biology, The Mill Recycling airship, Greenhouse, Yellowstone National Park
E#14 Atomic Theory Chemistry, Electricity Refining, Quantum Physics
I#1 Industrialization Railroad, Colonialism The Corporation, Steel, Communism, Logistics ironclad, Factory
I#2 Liberalism Economics, Romanticism Socialism Women’s Suffrage, Free Market Economy
I#3 Steel Electricity, Industrialization Hydraulics cruiser
I#4 The Corporation Industrialization, Economics Pharmacology, Mass Production, Refining, Electronics freight, Capitalization
I#5 Psychology Biology, Human Rights Cybernetics, Pharmacology, Social Security Freud’s Interpretation of Dreams
I#6 Communism Industrialization, Romanticism Socialism United Nations, Communism
I#7 Refining Atomic Theory, The Corporation Hydraulics, Plastics, Nuclear Fission Power Plant
I#8 Electronics Electricity, The Corporation Espionage, Rocketry, Computers Hydro Plant, Hoover Dam
I#9 Logistics Industrialization, Explosives Algorithms, Radio sappers, transport
I#10 Socialism Communism, Liberalism Labour Union guerrillas, Compulsory Education, Planned Economy
I#11 Hydraulics Refining, Steel Automobile, Flight, Refrigeration, Cargo Pipeline artillery, submarine, offshore platform
I#12 Radio Electricity, Logistics Advanced Flight, Telecommunication destroyer
I#13 Automobile Explosives, Hydraulics Mass Production, Mobile Warfare battleships, Superhighways
I#14 Labour Union Human Rights, Socialism Robotics, Social Security, Tourism
MO#1 Flight Hydraulics, Theory of Gravity Advanced Flight fighter
MO#2 Refrigeration Sanitation, Hydraulics Ceramics, Hydrogen Engine Supermarket, improve farmland
MO#3 Mass Production Automobile, The Corporation Global Marketing, The Laser, Plastics, Recycling Mass transit
MO#4 Espionage Electronics, Nationalism spy
MO#5 Fundamentalism Colonialism, Monotheism Fundamentalism, fanatics
MO#6 Algorithms Logistics Computers, Nuclear Fission Turing Machine
MO#7 Amphibious Warfare Navigation, Tactics Port facility, marines
MO#8 Telecommunication Printing, Radio Advanced Flight, Optical Fibre Television Network
MO#9 Mobile Warfare Tactics, Automobile Combined Arms armour
MO#10 Pharmacology Psychology, The Corporation Somnology Contraception
MO#11 Social Security Psychology, Labour Union Welfare Scheme
MO#12 Quantum Physics Atomic Theory, Optics The Laser, Unified Field Theory
MO#13 Advanced Flight Flight, Telecommunication Combined Arms, Rocketry, Stealth, Tourism bomber, carrier, airport, airbase
MO#14 Nuclear Fission Algorithms, Refining Fusion Power Nuclear Plant, Manhattan Project
INF#1 Rocketry Advanced Flight, Electronics Space Flight AEGIS cruiser, cruise missile, nuclear missile, SAM missile battery
INF#2 Tourism Advanced Flight, Labour Union Virtual Reality Holiday Resort, Disney World
INF#3 Plastics Mass Production, Refining Stealth, Ceramics SS Structural
INF#4 Recycling Ecology, Mass Production Environmentalism Recycling Centre
INF#5 Computers Algorithms, Electronics Robotics, Space Flight, Genetic Engineering Research Lab, Internet
INF#6 Combined Arms Mobile Warfare, Advanced Flight helicopter, paratroopers, hovercraft
INF#7 The Laser Mass Production, Quantum Physics Optical Fibre, Superconductor, Nanotechnology Early Warning System
INF#8 Robotics Computers, Labour Union Cybernetics, Cargo Pipeline howitzer, Manufacturing Plant
INF#9 Space Flight Rocketry, Computers Environmentalism Orbital satellite, Apollo Program
INF#10 Stealth Plastics, Advanced Flight Stealth Bomber, Stealth Fighter
INF#11 Ceramics Plastics, Refrigeration Superconductor SS Component
INF#12 Optical Fibre The Laser, Telecommunications Global Network Communication Network
INF#13 Genetic Engineering Biology, Computers Regeneration Map of the Human Genome
INF#14 Cybernetics Psychology, Robotics Artificial Intelligence SS Module, Biosphere 2
F#1 Superconductor Ceramics, The Laser Fusion Power, Nanotechnology
F#2 Environmentalism Recycling, Space Flight Arcologies, Hydrogen Engine Solar Plant, Green Economy
F#3 Cargo Pipeline Hydraulics, Robotics Arcologies pipeline
F#4 Fusion Power Nuclear Fission, Superconductor Fusion Plant
F#5 Nanotechnology The Laser, Superconductor replicator
F#6 Artificial Intelligence Cybernetics Virtual Reality, Global Network Weather control satellite
F#7 Regeneration Genetic Engineering
F#8 Arcologies Cargo Pipeline, Environmentalism Arcology
F#9 Hydrogen Engine Environmentalism, Refrigeration Gaia Charter
F#10 Global Network Optical Fibre, Artificial Intelligence Global Marketing World Government
F#11 Virtual Reality Tourism, Artificial Intelligence Somnology Holodeck
F#12 Unified Field Theory Quantum Physics Force-field
F#13 Global Marketing Global Network, Mass Production Auction Platform
F#14 Somnology Pharmacology, Virtual Reality Otherworld Dawn
Based on a tech tree by DanQ
Discuss
Comment