Watching these machines for a few seconds is fine, try watching them every day all day, not such fun! The constant loud rhythm hypnotizes you.It's so satisfying seeing real work. Instead of people doing nothing pretending it's something.Salute to the people that do these amazing potentially dangerous precision jobs.It blows my mind that every modern machine has to be built by other machines that are 100 times more complicated than the finished product. Endless respect to engineers who design factories.