#SF is great for #startup founders. Just not every founder. AI2 Incubator's Yifan Zhang has a framework for knowing the difference—and it starts with a simple question: is your startup butter or sand in the gears?

My latest for GeekWire: https://www.geekwire.com/2026/butter-or-sand-in-the-gears-the-question-every-founder-must-ask-before-choosing-sf-or-seattle/