I enjoy this career a whole lot. I would suggest that people who are considering this ahve a strong math background and a strong broad-based knowledge of engineering, particularly mechanical engineering. I travel a lot in this career which is great. It can be very demanding though.
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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