| 5500 BC - 1 BC | Answer | % Correct |
|---|---|---|
| Transportation | Wheel | 78%
|
| Communication | Telephone | 71%
|
| Navigation | Compass | 68%
|
| Time Keeping | Clock | 65%
|
| Communication | Pencil and Pen | 65%
|
| Computing | Computer | 60%
|
| Astronomy | Telescope | 60%
|
| 1 - 1600 | 1600 -1800 | 1800 - 1850 | +4 others | - | 56%
|
| Communication | Paper | 54%
|
| Entertainment | Television | 51%
|
| Military | Gunpowder | 50%
|
| Communication | Radio | 49%
|
| Computing | Internet | 48%
|
| Transportation | Steam Engine | 42%
|
| Medicine | Penicillin | 38%
|
| Communication | Printing Press | 37%
|
| Transportation | Automobile | 36%
|
| Communication | Telegraph | 35%
|
| Energy | Lightbulb | 33%
|
| Science | Microscope | 33%
|
| Energy | Nuclear Reactor | 33%
|
| Construction | Steel | 29%
|
| Sanitation | Flush Toilet | 28%
|
| Manufacturing | Plastic | 25%
|
| Mathematics | Calculus | 24%
|
| Optics | Camera | 24%
|
| Military | Rifle | 24%
|
| Mathematics | Abacus | 23%
|
| Medicine | X-Ray | 23%
|
| Military | Atomic Bomb | 22%
|
| Agriculture | Cotton Gin | 22%
|
| Mathematics | Arabic Numerals | 20%
|
| Communication | Alphabet | 18%
|
| Construction | Cement | 18%
|
| Manufacturing | Moving Assembly Line | 18%
|
| Energy | Battery | 17%
|
| Time Keeping | Gregorian Calendar | 17%
|
| Computing | Graphical User Interface | 16%
|
| Communication | Morse Code | 15%
|
| Communication | Satellite | 15%
|
| Transportation | Jet Engine | 14%
|
| Construction | Nail | 14%
|
| Construction | Dynamite | 13%
|
| Energy | Windmill | 13%
|
| Military | Submarine | 12%
|
| Fashion | Brassiere | 11%
|
| Fashion | Jeans | 11%
|
| Military | Radar | 11%
|
| Construction | Screw | 11%
|
| Music | Phonograph | 10%
|
| Transportation | Locomotive | 9%
|
| Music | Electric Guitar | 8%
|
| Electronics | Transistor | 8%
|
| Electronics | Laser | 7%
|
| Medicine | Vaccinations | 7%
|
| Medicine | CT Scan | 6%
|
| Agriculture | Pasteurization | 6%
|
| Military | Sonar | 6%
|
| Entertainment | Video Games | 6%
|
| Fashion | Zipper | 6%
|
| Energy | Alternating Current | 5%
|
| Medicine | Contraceptive Pill | 5%
|
| Agriculture | Fertilizer | 5%
|
| Transportation | Internal Combustion Engine | 5%
|
| Agriculture | Refrigeration | 5%
|
| Medicine | Condom | 4%
|
| Military | Drone | 4%
|
| Medicine | Hypodermic Needle | 4%
|
| Energy | LED Lightbulb | 4%
|
| Medicine | Stethoscope | 4%
|
| Fashion | Velcro | 4%
|
| Sanitation | Wastewater Treatment | 4%
|
| Manufacturing | 3D Printing | 3%
|
| Medicine | Electrocardiogram | 3%
|
| Computing | Fiber Optics | 3%
|
| Military | Kevlar | 3%
|
| Construction | Steel Skyscraper | 3%
|
| Material | Teflon | 3%
|
| Medicine | Anesthetic | 2%
|
| Construction | Carbon Nanotubes | 2%
|
| Agriculture | Mechanical Reaper | 2%
|
| Energy | Capacitor | 1%
|
| Medicine | Cloning | 1%
|
| Business | Corporation | 1%
|
| Military | Guided Missle | 1%
|
| Energy | Hydraulic Fracturing | 1%
|
| Medicine | In Vitro Fertilization | 1%
|
| Energy | Oil Refining | 1%
|
| Entertainment | Remote Control | 1%
|
| Astronomy | Saturn V Rocket | 1%
|
| Material | Silicone | 1%
|
| Military | Stealth Aircraft | 1%
|
| Entertainment | Videotape | 1%
|
| Mechanical | Ball Bearing | 0%
|
| Optics | Holography | 0%
|
| Electronics | Microcontroller | 0%
|
| Electronics | Optical Sensor | 0%
|
| Medicine | Pacemaker | 0%
|
| Communication | RFID | 0%
|
| Transportation | Shipping Container | 0%
|
| Entertainment | Virtual Reality | 0%
|