This photo was taken on March 25, 2009 - the day that I walked into class to discover my class had created these t-shirts to help "spread the word". Thanks to everyone who has bought a t-shirt over the last five years and especially to those who have sent me pictures.
But remember that the best way to spread the word is to grow up to be a math teacher and use Hergert Numbers as the name for your potential inflection points. Keep spreading the word!
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