“The encyclopedia wand’s a theoretical puzzle, like Zeno’s paradox. The idea is t’engrave the entire encyclopedia onto a single toothpick. Know how you do it?” “You tell me.” “You take your information, your encyclopedia text, and you transpose it into numerics. You assign everything a two-digit number, periods and commas included. 00 is a blank, A is 01, B is 02, and so on. Then after you’ve lined them all up, you put a decimal point before the whole lot. So now you’ve got a very long sub-decimal fraction. 0.173000631 … Next, you engrave a mark at exactly that point along the toothpick. If
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