|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||6 days ago||30.88||$14.86||You save $16.02|
|Amazon US||4 days ago||22.87||$14.86||You save $8.01|
Tom Sheldon has degrees in artificial intelligence and bioinformatics, and is working toward a doctorate in mathematical biology, with a sideline in children's books. He lives in London with his wife and son.
"Logic has not been this fashionable since the Rubik's Cube."--ABCNews.com "The morning brain breakfast for millions."--USA Today "Feel the rush and become addicted."--Slate