As Easy As Pi: Stuff about numbers that isn't (just) maths

It's hard to imagine a world without numbers in this day and age, when our whole life is centered around commerce and money, and it is the only language that is the same the world over. However, did you know that for a long period of time people could not get their heads around the idea of zero, a figure representing nothing, and that it was even regarded as heretical in some circles? As Easy As Pi is an entertaining and accessible guide, written for those who love numbers - and those who d...