Two of the legendary pioneers of the West Coast VC industry — Arthur Rock and Don Valentine — had very different investment theses.

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August 24, 2026
Do you bet on the startup jockey or horse? Try the third option
New research suggests a third factor deserves far more attention
4 min read
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John Thornhill is Sifted’s founder and innovation editor of the Financial Times. He tweets from @johnthornhillft

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