100 Essential Things You Didn't Know You Didn't Know (Math Explains Your World)

Have you ever considered why you always get stuck in the longest line? Why two’s company but three’s a crowd? Or why there are six degrees of separation instead of seven? In this hugely informative and endlessly entertaining book, John D. Barrow takes the most baffling of everyday phenomena and—with simple math, lucid explanations, and illustrations—explains why they work the way they do. His witty, crystal-clear answers shed light on the dark and shadowy corners of the physical world we all think we understand so well.

While major retailers like Amazon may carry 100 Essential Things You Didn't Know You Didn't Know (Math Explains Your World), we specialize in bulk book sales and offer personalized service from our friendly, book-smart team based in Portland, Oregon. We’re proud to offer a Price Match Guarantee and a streamlined ordering experience from people who truly care.

We’re trusted by over 75,000 customers, many of whom return time and again. Want proof? Just check out our 25,000+ customer reviews—real feedback from people who love how we do business.

Prefer to talk to a real person? Our Book Specialists are here Monday–Friday, 8 a.m. to 5 p.m. PST and ready to help with your bulk order of 100 Essential Things You Didn't Know You Didn't Know (Math Explains Your World).