6. NASA's Plan To Stop A Massive Asteroid - Armageddon
THE PLAN: With a huge asteroid heading directly for Earth, humanity's only possible salvation comes from the plan to send astronauts to intercept the giant space rock, dig a big hole and burying then detonating a nuclear warhead. This obviously requires an enormous amount of calculations by NASA on what exact kind of detonation will divert the asteroid, plus they need to be able to actually land on the thing. They decide to entrust this mind mindbogglingly complex task to a bunch of miners. Obviously.
WHY IT'S STUPID: Learning how to be an astronaut takes a couple of years usually and you have to be in absolutely peak physical condition in order to survive the rigors of space travel. So rather than getting some already trained astronauts and teaching them how to use a massive drill, they do the opposite and teach miners how to be astronauts. This is basically exactly the same as deciding to enter a horse into the Grand National and then insisting that the horse ride the jockey.