Leonardo Da Vinci's Bad Ideas
- Da Vinci's diving suit: While innovative, it was impractical for wartime use due to limitations in depth and lack of attack methods.
- Armored tank: Despite its impressive design, it was slow, incapable of operating on rough terrain, and had a faulty crank system.
- Flying machines: Da Vinci's designs, while detailed and based on careful observation, were largely unviable due to lack of consideration for pilot placement and control.
- Parachute: Da Vinci's pyramid-shaped design was successful in slowing descent, but the heavy wooden frame posed a serious risk upon landing.