As a counter example of what is hard or not, a bit more study is easy compared to 'the standard definition of blue collar'. As an example. Pick up a 50 pound bo

As a counter example of what is hard or not, a bit more study is easy compared to 'the standard definition of blue collar'. As an example. Pick up a 50 pound box. Walk ten feet with it, and set it down. Repeat. For 12 hours a day, 6 days a week. That makes advanced systems design, such as self driving cars look trivial because theres a ton of talent lifting one enormously complex box, one time - then it ships.