Why not use a chainsaw to saw iron instead of a chainsaw?

My metalworking internship is also a hand saw hammer. Beginners should start with hand saws, because hand saws don't generate sparks, don't need protective gear, are easy to operate, don't need to learn how to use them, and are not dangerous (afraid that you will cut yourself when you come up, the saw will definitely stop slower than the hand saw, and you will die when you see it). Moreover, slow sawing is not easy to make mistakes, and you can also exercise your muscles to lay the foundation for the future. Finally, the most important thing is to reduce costs and noise, which makes you very tired.