1) Guy doing heavy, crazy work with primitive tools.
2) Guy doing heavy, crazy work with primitive tools while wearing flip flops
3) Guy squats beautifully (21:10); interesting to me because of the whole thing about how many 'mericans can't do a full squat because we live our lives differently vs alot of other cultures, especially asian cultures ( we do lot's of chair use and sit-type toilet bowl use, vs less chair use and more squatting and squatting over in-floor or in-ground toilet bowls for many other cultures).
I can only imagine how many get infected cuts on their feet too. Or lose eyes with no eye pro. I admire their work ethic and skills, but wonder how much more productive and healthy they would be with proper gear.
However one could argue, barring serious injury, they are more "healthy" by not using what we think of as proper gear. Perhaps stronger, more flexible, more proprioception, more hardy, more durable, more resistant to minor injuries.
Old tech impresses me more than new tech does. Kind of take new improvements for granted. "Yea, robots, computers, whatever..."; it just seems easier to me. All the old mechanical stuff that was made for the first time ever seems less obvious to me, and harder to achieve. All the pieces handmade to a certain extent, and working together in almost impossible complexity.