WOW. I paid a hefty sum of favors for a copy and boy has it paid off. I always carry it around with me because let me tell you, this baby is a life saver; it can thwart off any attacks. Simply flip to any page and anyone within a 3 block radius will instantly fall asleep. And if that doesn't work, just use it as a shield. No knife can penetrate this 300 page sucker no matter how much you hate math. This gives you the opportunity to counter attack and boy is it effective. Has saved my life at least 0 times. Would possibly maybe not definitely uncertainly surely not doubtfully decidedly questionably recommend.