Just behind Alexander Gerst here, to the bottom left, you can see a huge robotic arm on the International Space Station. It's called the Canadarm2 and is a very flexible device. It can grab cargo spacecraft, lift astronauts and heft heavy pieces of equipment. The person handling this robotic arm has to have just the right touch to do all these different tasks.
Canadarm2 shows just how highly trained astronauts and cosmonauts need to be to qualify for a space station mission. They not only have to fly a Soyuz spacecraft, speak Russian and do normal space station operations, but they also need to know how to fix things and operate fancy equipment.
5. Dealing with distraction