If You Don't Know Whether A Mushroom Is Edible Or Not, You Cook It All Up, And You Take A Little Bit And Then You Leave It Until The Next Day And Watch To See If There Are Any Bad Effects.

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If you don't know whether a mushroom is edible or not, you cook it all up,
and you take a little bit and then you leave it until the next day and
watch to see if there are any bad effects. If there aren't any, you eat a
little more, and presently you know something.
-- John Cage

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