I've heard sometimes landing gear is also involved.. We really need a placebo controlled double blind study to learn if landing gear is actually effective of j

I've heard sometimes landing gear is also involved.. We really need a placebo controlled double blind study to learn if landing gear is actually effective of just a cargo cult like parachutes.. [0] https://www.bmj.com/content/363/bmj.k5094 https://www.bmj.com/content/363/bmj.k5094