I think everyone knows about the Mad Hatter in Alice In Wonderland. That odd character who you wonder about their sanity. That’s probably because in Lewis Carroll’s day the people who made hats used mercury in the production, constant use of mercury drove the hatters crazy, literally! The 10/6 stuck in Lewis Carroll’s creation’s hat is probably the cost of the hat, 10 shillings and sixpence. The day was created by a group of computer programmers in Boulder, Colorado in 1986. Is mercury used in programming computers? That would explain a lot!
How to celebrate – Learn how to make a hat! Read Alice In Wonderland. Watch one of the many movies based on Alice and her Adventures.