What exactly is "The Friendship Algorithm"? If you're a big fan of The Big Bang Theory, the answer to that question is intuitively obvious. Only Sheldon could come up with something like this! The Big Bang Theory Friendship Algorithm Journal measures approximately 8-inches tall x 5-inches wide and contains 160 watermarked lined pages. This glue-bound book from Bif Bang Pow! features 4-color cover art of Dr. Sheldon Cooper's intensely logical(?) Friendship Algorithm and the The Big Bang Theory logo. Order yours now so you can take it with you to all this year's geeky events!