He kaiako honore ia i te Whare Wānanga o Karlsruhe Institute of Technology (KIT), Germany, i whakawhiwhia ki a ia i te tau 2006. He kaiwhakaako honore ia i te Whare Wānanga o California, Berkeley, i reira ia i whakatū ai i te Dean o te Kura o te Rongoā. I uru a Varian ki a Google i te tau 2002 hei kaitohutohu, a kua mahi ia i runga i te hoahoa o nga hokohoko whakatairanga, econometrics, pūtea, rautaki umanga, me te kaupapa here a te iwi. Ko ia te tohunga ohaoha nui i Google.
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