You will do well in this career if you pay close attention to detail, even arbitrary-seeming ones. There is a lot of repetitive work to it. Be ready to drown in paper. I am personally trying to get out of it.
In the 18th and 19th century, hatmakers used poisionous chemicals including mercury in their work. As result, many developed pathological symptons -- an estimated 10% went insane. Hence the term "mad as a hatter" and Lewis Carroll's character, the Mad Hatter.
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