About the Author

Tony Ballantyne grew up in County Durham in the northeast of England, studied mathematics at Manchester University, and then worked as a teacher, first of math, then IT, in London and later in the northwest of England.

Nowadays he enjoys playing boogie piano, cycling, and walking. In the past he has taught sword fencing at an American children’s camp, been a ballroom dancer, and worked voluntarily on conservation projects and with adults with low literacy and numeracy.

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